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Title: Science and Medieval Thought

The Harveian Oration Delivered Before the Royal College of Physicians, October 18, 1900

Author: Sir Thomas Clifford Allbutt

Release Date: February 21, 2012 [eBook #38943]

Language: English

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SCIENCE AND MEDIEVAL THOUGHT.

London: C. J. CLAY and SONS,
CAMBRIDGE UNIVERSITY PRESS WAREHOUSE,
AVE MARIA LANE.

Glasgow: 50, WELLINGTON STREET.

Leipzig: F. A. BROCKHAUS.
New York: THE MACMILLAN COMPANY.
Bombay: E. SEYMOUR HALE.

SCIENCE AND MEDIEVAL THOUGHT

THE HARVEIAN ORATION DELIVERED BEFORE
THE ROYAL COLLEGE OF PHYSICIANS,
OCTOBER 18, 1900,

BY

THOMAS CLIFFORD ALLBUTT, M.A., M.D. Cantab.

Fellow of the College,
Hon. LL.D. Glasgow, Hon. M.D. Dubl., Hon. D.Sc. Vict.,
Hon. F.R.C.P. Dubl., F.R.S.

REGIUS PROFESSOR OF PHYSIC IN THE UNIVERSITY OF CAMBRIDGE;
FELLOW OF GONVILLE AND CAIUS COLLEGE, CAMBRIDGE;
CONSULTING PHYSICIAN TO THE LEEDS GENERAL INFIRMARY;
PHYSICIAN TO THE ADDENBROOKE’S HOSPITAL, CAMBRIDGE.

LONDON
C. J. CLAY AND SONS
CAMBRIDGE UNIVERSITY PRESS WAREHOUSE
AVE MARIA LANE

1901

[All Rights reserved.]

TO

SIR WILLIAM SELBY CHURCH, BART., M.D.

PRESIDENT OF THE ROYAL COLLEGE OF PHYSICIANS OF LONDON,

THIS ORATION,
DELIVERED AT HIS REQUEST,
IS DEDICATED.

ERRATUM.
p. 78, note 1, l. 19; for “were in orders, for the most part in holy orders;” read “were generally speaking in holy orders;”

7

PREFACE.

IN the Middle Ages the old world had passed, and the vision of a new world came near to the eager and passionate hearts of many peoples. Lincoln and Wells, Amiens and Chartres, Florence and Assisi tell us of the glory of that vision; and bear witness of its flight: for with Gilbert, Galileo, Harvey and Newton the Middle Ages themselves became a phantom, and again the spirit of a new world appeared. Thus in the phases of time the world dies and is born again; fulfilling greater destinies. But the new are born in the cold bed of the elder worlds, and the young life is chilled, or a lustier offspring turns unnaturally to curse the dead; so in their decrepitude lay the Middle Ages upon modern life; and the Middle Ages were accursed, until certain pious men sought to reanimate their vestments and their formulas, and to set the hands back on the dial of the8 centuries; as manyminded man seeks wistfully to reanimate the simple wonders and beliefs of his childhood. Their ministry was no more than pious; the method of modern history wins the fruits of the past while casting away the shadow of its withered branches. This comparative method, first applied to the art and romance of the Middle Ages, so that every dilettante may now discourse to us of their evolution, has been applied also to the thought of the period; but its results, laid up in the closets of a few scholars, are as yet unfamiliar. It may then become one, who in no sense a scholar has strayed into these secret places, to try to distribute some lessons of the medieval thought which, to many of us, seems as sere and outworn as did the relics of Gothic shrines to our great-grandfathers. For, as in those medieval generations which lay nearest us the furnace had cooled, impatiently we had thrown metal and dross aside, and let our contempt for the dryness and pedantry of its latter days prevent our vision of the earlier time when the passion for knowledge bore up the world, and sought even to contain it. That dogma is not eternal is manifest to every wanderer in the streets of Toledo, yet the historian may well recall us to9 the study of a time when, by mystical or intellectual inspirations, men strove eagerly to know the meaning of life, its origins, and its issues; and may lead us to the discovery of the seeds and wells of its fertility. The Greeks prophesied that before man can determine his place and service in this world he must form some theory of the world as a whole; the ages of faith prophesied that great deeds must be born of great faith and of great conceptions.

To those who live only in the past, or only in the present, there seems in the discriminations of the comparative historian to be a certain cold-bloodedness. Are not the ears of this critic, so aloof from the murmuring of creed and controversy, are they not deaf to the voices of the spirit which he would interpret to us? A distinguished bishop who was among my hearers, with the fervour and gentle humour so well known in him, rallied me not for celebrating science but for putting religion to rout. Yet in our own day surely the argument is changed, not in form only but in very nature; so changed by the conceptions of evolution, which have entered the mind of churchman and layman alike, that not a few10 speculative beliefs are changing sides without the knowledge of the disputants; and he who thinks himself a defender of the faith may have joined the revolt. But if we no longer carry the colours of the troops of the past we shall collect our lessons from its strategies; and for one of these lessons a prelate of the King will give thanks with me, that his supremacy has palsied the arm of the inquisitor to strengthen that of the apostle.

An unsystematic reader of a subject finds it out of his power to make due acknowledgment of the help and advantage derived from expert authors. Much of the matter had seeded itself insensibly in his brain in the course of general reading and conversation; much of it again had been obtained more carefully from sources now forgotten. To the following authors I know I am profoundly indebted, as I am to many others to whose names and works I can now give no reference:

13

INTRODUCTION1.

IN the many Harveian Orations which have been delivered since the death of the founder of modern physiology the direct aspects of his honour and of his work have been exhausted; of late years the orators have concerned themselves with indirect aspects. Some of my friends have said to me that they lack a perspective view of Harvey and his work; that even highly educated men have little sense of his relation to medieval thought, or of the evolution of medieval into modern thought. Of the several stars of the constellation—of Copernicus, Gilbert, Galileo, Harvey—they had some knowledge; but how came Harvey to be at Padua? how did science spring up in North Italy? did science arise out of the womb of medicine, or contrariwise? why 14did natural science not flourish in the thirteenth century, and was it not a great misfortune for Europe that it did not then flourish? what were the systems of thought which in the Middle Ages preceded, encouraged or thwarted the travail of the human mind, and what of good or ill do we owe to them? These and such questions it seemed not unfitting that a Harveian Orator of this latter day should consider. Now on the philosophy of the Middle Ages, and on its relation to the era of positive science of which Harvey was perhaps the chief pioneer, there lay in a drawer in my cabinet the confused and occasional notes of many years. An interest in this thorny subject, sown in my mind at first by accident, and reawakened by these enquiring friends, had for me the charms of an old fancy, and I trust some brief essay thereon may have a temporary service; if, that is, I can touch the imagination of my hearers, and after some broken fashion bring before them a vision of the nations swayed hither and thither upon the face of Europe by a thirst for knowledge of a kind different, both in its methods and in its aims, from our own.

This oration cannot have the merit of an original study. Had I the equipment I have not the leisure to carry my investigations to the sources. Yet I may have attained to some maturity of judgment herein by long occupation of my mind since, in 1863, my old friend Mr Thomas Marshall of Leeds, sometime of St John’s College, Oxford, interested me in the life and work of Roger Bacon, the only eminent forerunner of the great naturalists of the seventeenth century.

15The art of the Middle Ages and the social and political history of the time have fascinated modern Europe; for medieval thought, though its phrases survive in their mouths, few persons have shown any care: yet to these conflicts we owe what we are. No great battles of mankind have been fought in vain; none of its great captains has deserved oblivion. Yet we shrug our shoulders at their uncouth or outlandish names; we assume that from their chairs there issued naught but rhetoric, casuistries and fallacies, and that their multitudinous disciples were silly moths.

Each period of human achievement has its phases of spring, culmination, and decline; and it is in its decline that the leafless tree comes to judgment. In the unloveliness of decay the Middle Ages are as other ages have been, as our own will be: but in those ages there was more than one outburst of life; more than once the enthusiasm of the youth of the West went out to explore the ways of the realm of ideas; and, if we believe ourselves at last to have found the only thoroughfare, we owe this knowledge to those who before us travelled the uncharted seas. If we have inherited a great commerce and dominion of science it is because their argosies had been on the ocean, and their camels on the desert. “Discipulus est prioris posterior dies”; man cannot know all at once; knowledge must be built up by laborious generations. In all times, as in our own, the advance of knowledge is very largely by elimination and negation; we ascertain what is not true, and we weed it out. To perceive and to respect the16 limits of the knowable we must have sought to transgress them. We can build our bridge over the chasm of ignorance with stored material in which the thirteenth century was poor indeed, we can fix our bearings where then was no foundation; yet man may be well engaged when he knows not the ends of his work; and the schoolmen in digging for treasure cultivated the field of knowledge, even for Galileo and Harvey, for Newton and Darwin. Their many errors came not of indolence, for they were passionate; not of hatred of light, for they were eager for the light; not of fickleness, for they wrought with unparalleled devotion; nor indeed of ignorance of particular things, for they knew many things: they erred because they did not know, and they could not know, the conditions of the problems which, as they emerged from the cauldron of war and from the wreck of letters and science, they were nevertheless bound to attack, if civil societies worthy of the name were to be constructed. How slow in gestation is the mother of truth we may see by comparing the schoolmen of the second medieval period with those of the first; in the enlargement of their view, the better furniture of their minds, and the deeper meaning of their distinctions: and when we compare with these later schoolmen the naturalists of the seventeenth century, we find not new acquirements only but also a new direction of the pursuit of truth.

It seems hardly comprehensible that great and stable societies have been built up on transcendental schemes of thought, upon conceptions poised as it were in the air.17 Without a system of morals no civil society could exist; yet if mankind must have waited for civil polity until some such system were built up from below, of scientifically tested materials, social constructions would have been virtually impossible. In morals, as in the arts, the art precedes the science; the intuitions of genius imagine social schemes of provisional validity, and new and lofty standards of fitness. But a social fabric thus born of a vision can bear no rough handling; and even the solid builders who would make a more permanent foundation upon positive conceptions, while seeking more or less deliberately to underpin the fabric, may, and often do, shake it to ruin.

Hence in all guardians of morals the dread of meddling with the reigning vision of truth; hence its sanctity, that no man shall try the stuff of which it is made. And the dangers of heresies from within are more fearful than those of alien attacks; social cohesion, the end of it all, is thereby more exposed to disintegration. Yet nevertheless, as the generations of men change, and as knowledge increases, men see from new points of view; and thus while for some the reigning vision retains its apparent solidity, for others its rays are broken or dissolved. Even John Henry Newman was compelled to teach the relativity of truth, and that a doctrine of development must be accepted. For every provisional synthesis then the time must come when the apparition of truth can no longer command united allegiance, and criterions begin to encroach upon sanctions. Broader and more stable foundations have, it is true,18 been rising almost insensibly, yet it may be long ere the superstructure rise into the heavenly light; in the lower work many will see no beauty and no hope, others will see safety in its enlargement and solidity. By these indeed the visions of the imagination are apt to be forgotten, or in the pressure of intellectual verification even despised; the mean level of conception may not indeed be lower, it may haply be higher, yet the highest, wherein truth may be revealed by illumination, is not divined in its full force, abundance and life. Great seers are wont to leave to others to find out, or even to care, what bottom they stood upon; yet only through transitory periods of a humbler duty than theirs can the bases be laid and enlarged for times of richer fruition. One of the profoundest of modern sayings was that of Freeman—that the end of modern material progress is to bring large societies up to the level of small ones.

This is the day of a great celebration; that on this anniversary I am worthy to take a place in the succession of your Orators is more than I dare to believe, that you have deemed me worthy is my encouragement. In private duty also I am bound to honour one of the greatest of the sons of the University of Cambridge, and the greatest member of the ancient and honourable house of Gonville and Caius College.

19In some respects I am ill equipped for my office; of the history of the practice of Medicine from the time of Galen to the time of Harvey I am almost ignorant, I fear wilfully ignorant. Well indeed may we turn our eyes away from those centuries wherein one of the chief callings of man fell into unexampled and even odious degradation; yet I trust that in me this ignorance and this aversion may be compensated by some familiarity with the history of thought in the Middle Ages, a familiarity acquired during thirty-six years of abiding interest, and occasional study.

The discovery of the circulation of the blood by William Harvey is commonly regarded among scientific discoveries as pre-eminent if not unique. I can quote but two opinions on this matter, both taken beyond our own land. In France, Dr Daremberg exclaims “Voici Harvey! Comme au jour de la création le chaos se débrouille, la lumière se sépare des ténèbres!” In Germany, Dr Baas says that Harvey stands alone in respect of the world of life; that his discovery of the inner working of the microcosm takes a place equal to, if not indeed higher than, those of Copernicus, Kepler and Newton in respect of the macrocosm. It will be20 my endeavour to show that these judgments are historically justifiable.

To put the discovery of the systemic circulation of the blood in its true light, we must have some notion of the history of philosophy, science and medicine. Medicine, and herein it is in contrast with Theology and Law, had its sources almost wholly in the Greeks. Not only in the doctrine of the four elements of Empedocles, a doctrine which has survived almost to our own day2, and in the physical theories of Heraclitus and Leucippus, did medicine, for good or ill, first find a scheme of thought, but in the schools of Hippocrates and of Alexandria it was based also, and far more soundly, upon natural history and anatomy. The noble figure of Galen, the first experimental physiologist and the last of the great Greek physicians, portrayed for us by Dr Payne in the Harveian Oration of 1896, stood eminent upon the 21brow of the abyss when, as if by some convulsion of nature, medicine was overwhelmed for fifteen centuries. To the philosophy of medicine, Galen had given more than enough; to its natural history he had contributed in the following of Hippocrates; to its discoveries he had given the greatest of all means of research, individual genius; to its methods he had given, but in vain, that indispensable method, practised first perhaps in history by Archimedes and the Alexandrians, of verification by experiment; a method, after Galen, virtually lost till the time of Gilbert, of Galileo and of Harvey.

In the growth of human societies small civilisations, however exquisite, have been sacrificed to the formation of vaster and vaster congregations of men; thus only, it would seem, is an equilibrium to be reached of sufficient stability for the highest ends of mankind. Greece, beautiful as was her bloom, penetrating as was her spirit, perhaps because of her very freedom of thought, never became a nation; her city states were too wilful to combine. The Macedonian power broadened the foundation of polity eastward and westward; and this work was carried as far perhaps as sword and fasces could carry it by the power of Rome.22 But even the Roman peace, bought as it was at the cost of learning and the arts, was but a mechanical peace; in the wilder, more turbulent and more heterogeneous peoples of the later Empire the bodies but not the wills of men were in subjugation. The great system of Roman Law, which Numa, the Moses of Rome, had invested with supernatural awe, had become but an external rule; even in Rome herself, poorer in people, poorer in commerce, poorer than ever in ideas, the sanction of patriotism was failing, and her citizens were held together for the most part by their baser and more dangerous passions3. For Eastern Europe the University of Constantinople established a compact and uniform system of thought, subtle prolix and acquisitive rather than original or profound; but in the West, under the Frank and later Northern devastations, the very traditions of learning and obedience were broken up; schools were closed, and even the art of writing was almost lost. Then it was that the cohesion and development of Western Europe 23were saved by a new and a wonderful thing. From the East, the home of religions, had spread, like an exhalation, Christianity, that religion which proves by its survival that it is the fittest sanction for the will of man. This religion, entering as a new spirit into the ancient fabric of Roman Empire, was to hold men’s service in heart and soul as well as in body; yet to this end no mere mystic or personal religion could suffice: clothing itself with the political and ritual pride and even with the mythology of the pagan Empire it inspired a new adoration; but it imposed also upon Europe a catholic and elaborated creed. To preserve the authority of the common faith not only must every knee be bowed, not only must every heart be touched, but to build and to repair its fabric every mind must also bring its service. How the scheme of the Faith was built up, how oriental ecstasy and hellenistic subtlety, possessing themselves of the machinery of Roman pomp, were wrought to this end, we may briefly consider.

As, politically, under Diocletian and Constantine the ancient world gave place to the new, so in the third century philosophy was born again in24 neo-platonism4, the offspring of the coition of East and West in Alexandria, where all religions and all philosophies met together. The world and the flesh were crucified that by the spirit, man might enter into God5. Pure in its ethical mood, neo-platonism, says Harnack, led surely to intellectual bankruptcy; the irruption of the barbarians was not altogether the cause of the eclipse of natural knowledge: to transcendental intuition the wisdom of the world had become foolishness. Yet even then, as again and again, came the genius of Aristotle to save the human mind. The death of Hypatia was the death of the School of Alexandria, but in Athens neo-platonism survived and grew. Proclus, ascetic as he was, was versed also in Aristotle; and he compelled the Eastern mysteries into categories: so that on the closure of the School of Athens by Justinian (a.d. 529) a formal philosophy was bequeathed to the Faith; the first scholastic period was fashioned, and the 25objects and methods of enquiry were determined for thirty generations. From Aristotle Europe adopted logic first, and then metaphysics, yet both in method and in purpose Origen and Augustine were platonists; rationalised dogma lived upon dialectic, and conflicted with mysticism; but logic, dogma and mysticism alike disdained experience.

Thus, no mere external sanction, stood the Faith; threefold: from the past it brought its pompous ritual, it appealed by its subtle dogmatic scheme to the intellects, and by its devotion to the hearts of men. Through the mirage of it, when its substance had waned, Copernicus, Galileo, and Harvey had to steer by the compass of the experimental method. This was their chief adversity, and of other adversities I have to speak.

The visitor to the Dominican Church of St Catherine at Pisa will see on its walls St Thomas of Aquino with the Holy Scriptures in his hand; prostrate beneath him is Averroes with his Great Commentary, but beside him Plato bearing the Timæus. It was the fortune of the Faith that, of all the treatises of Plato, the Timæus, the most fantastic and the least scientific, should have been set apart to instruct the medieval26 world; that the cosmical scheme of the Timæus, apparelled in the Latin of Chalcidius,—for there were then no Greek texts in the libraries of the West,—should for some 500 years have occupied that theoretical activity which Aristotle regarded as the highest good of man6. Again, those works of. Aristotle which might have made for natural knowledge fell out of men’s hands7, while in them, as Abélard tells us of himself, lay the Categories, the Interpretation, and the Introduction of Porphyry to the Categories, all in the Latin of Boetius8; treatises which made for 27peripatetic nominalism, but whereby men were versed rather in logic and rhetoric than in natural science. Thus Plato’s chimera of the human microcosm, a reflection of his theory of the macrocosm, stood beside the Faith as the second great adversary of physiology.

The influence of authority, by which Europe was to be welded together, governed all human ideas. As in theology was the authority of the Faith, so in the science and medicine of the first period of the Middle Ages was that of the neo-platonic doctrines, and, in the second period, of the Arabian versions of Galen and of Aristotle; furthermore in this rigid discipline metallic doctrine almost necessarily overbore life and freedom. It is not easy for us to realise a time when intellectual progress—which involves the successive abandonment of provisional syntheses—was unconceived; when truths were regarded 28as stationary; when reasons were not tested but counted and balanced; when even the later Averroists found final answers either in Aristotle or in Galen9. Thus in the irony of things it came to pass that Harvey was withstood by the dogma of Galen who, in his own day, had passionately appealed from dogma to nature.

Porphyry of Tyre, who lived in the 3rd century, may be called the founder of both Arabian and Christian scholastics. He was an Alexandrian, but of peripatetic rather than platonic opinions. In the Isagoge, or Introduction to the Categories, already mentioned as translated by Boetius about 500 a.d., he set forth plainly a problem which during the Middle Ages rent Western Europe asunder; a problem which, says John of Salisbury10, 29engaged more of the time and passions of men than for the house of Cæsar to conquer and govern the world; one indeed which even in our day and country is not wholly resolved.

The controversy lay between the Realists11 and 30the Nominalists; and the issues of it, in the eleventh century,—at which time the “Dark Ages” passed into the earlier of the two periods of the Middle Ages,—were formulated on the realist side by William of Champeaux, while the Breton Rousselin, or Roscellinus, had the perilous honour of defining them on behalf of the nominalists12. To see the depth of the difference we must step back a little, to a time when metaphysics and psychology were not distinguished from other spheres of science13, and all research had for its object the nature of being. Plato himself held ideas not as mere abstractions but in some degree as creative powers; and we shall see how potent this function became in the thought of the Middle Ages when, 31in the ardour of research into the nature of being, the modes of individuating principles were distinguished or contrasted with an ingenuity incomprehensible to Plato or Aristotle, or at any rate undesired by these greater thinkers. Aristotle avoided the question whether form or matter individuate; he held that there is no form and no matter extrinsic to the individual. But by the medieval realist every particular, every thing, was regarded as after some fashion the product of universal matter and individual form. Now “form” might be regarded, and severally was regarded, as a shaping, determinative force or principle, pattern type or mould, having real existence apart from stuff, or, on the other hand, as an abstract principle or pattern having no existence but as a conception of the mind of the observer. The realists roundly asserted that form is as actual as matter, and that things arise by their participation—without whiteness no white thing, without humanity no man; and not individuals only: for the realist, out-platonising Plato, genera and species also had their forms, either pre-existent (“universalia ante rem”), or continuously evolved in the several acts of creation (“universalia in re”). Indeed for the32 extreme realist every “predicamental modality” was “aliquid ens separatum”; for instance, the soul, the active intellect, the passive intellect, and so on: conversely, by fusing idea with will, for other philosophers realism would get pushed back into efficient reason or divine will, and almost vanish14. By this latter route the Sorbonne, originally opposed to the Thomists, became nominalist after all; as did those once pious realists the Augustinians and Cistercians. Setting aside then the extreme nominalists, who would have dissolved thought by declaring all creatures to be so individual as to be incomparable,—“pulverising existence into detached particulars,” as some one has put it—and that names of kinds are mere nouns, or indeed mere air (“flatus vocis”), the prevalent nominalists were content to deny to ideas, forms, principles, or abstractions any other existence than as functions 33of the human mind—as subjective conceptions. For Ockham, says Hauréau, an idea was but a modality of the thinking subject. Abstractions then for these thinkers were but mental machinery for analysis of the concrete. Aristotle was as obscure and inconsistent in his language herein, and often elsewhere, as he was profound and scrupulous; but when his works came to be studied as a whole, and in the original tongue, the influence of his method, rather than the close consistency of his language, told against realism: virtually he was a conceptualist, and he found reality, where Plato denied it, in the particular object of sense15.

34

Even Francis Bacon, who was deeply indebted to Aristotle, never extricated himself from the tangle of form, cause and law16.

Now this was a great argument, no empty dispute; the bones of dead controversies cumber the ground, but no controversy was empty which moved profoundly the minds and passions of men: both for ecclesiastical and secular thought the dispute was grave. While realism was essential to the Church—for instance, on realist grounds St Anselm defended the medieval doctrine of the Trinity against Roscellinus; the Church herself 35claimed a real existence apart from the wills of successive generations of individual and variable men; she taught that Man had fallen not only in many or all individual cases, but as a kind having a real existence17, and again that in the Mass there is change of hypostasis18—while then realism was essential to the Faith, yet if forms pre-exist (“ante rem”) then the acts of God must be predetermined—“fatis” non “avolsa voluntas”; or if forms are only “in re” God must be form, living in each and every act and thing, which is Pantheism (“materia omnium Deus”): an impersonal conception and a dissolution of dogma which the Church must and did abhor. “Pessimus error”—there is the abyss, cried Albert, avoiding it by dialectical juggles. Erigena, the brilliant prophet and protestant19 of the first period of 36the scholastic philosophy, was virtually a pantheist after the pattern of Parmenides20; as Spinoza was the last great realist. David of Dinan again was such a pantheist, though luckily for him the Church did not find it out till he was dead; and he was martyred only in his bones. Indeed the great Robert of Lincoln barely escaped the accusation of pantheism under the wing of Augustine. The heresies of David, and of Amaury, caused the reaction of the first years of the 13th century against Aristotle. Amaury seems indeed to have cleared out Christian dogma pretty thoroughly, and to have preached the coming of science as the “third age” of the world. Many of his followers were sent to the stake; by the Synod of Paris (1209) the works of Aristotle were proscribed, and many copies of them burned. This proscription was virtually withdrawn by Gregory the Ninth in 1231; and Hales, Albert and St Thomas devoted themselves again to the study of Aristotle, and 37established his supremacy21. Indispensable then as realism was for the Church, its creed, and 38its sacraments, yet therein it found itself in a dilemma between the conceptions of a Creator working under conditions, and of a spirit immanent in matter; and when theological philosophy culminated in St Thomas, and was fixed by him as it now rules in Rome, this difficulty was rather concealed in his system than resolved22. Every scheme of 39thought must make some declaration on the nature and place of universals; the problem was no hair splitting23, it dealt with the very nature and origin of being; it agitated the minds of thinking men at a time of the most fervid and widespread enthusiasm for knowledge which the Western world has ever known,—at a time when Oxford counted its students by thousands, and when in Paris a throng athirst for knowledge would stretch from 40the cloisters of the Mathurins to the faubourg of St Denis24; and, in respect of our theme of this day, we shall see that even Harvey was embarrassed by certain aspects of it.

For, to resume, closely allied to the argument concerning universals was that concerning “form and matter.” Whether the terms used were “form and matter,” force or energy or “pneuma” and matter, “soul or life” and “body,” “determinative essence and determinate subsistence,” “male principle and female element,” “archæus and body,” the potter and the clay of the potter; or whether again they were “type and individual,” “cause and effect,” “law and nature,” “becoming and being,” or even the “thought and extension” of Descartes, the riddle lay in the contrast of the static and dynamic aspects of things; in the incessant formation of variable and transitory individuals in the eternal ocean of existence25.

41For early thinkers, untrained in the methods and unaware of the limits of thought, even for the great and free thinkers of Greece, a captivating analogy was irresistible26; while inventing schemes of thought they believed themselves to be describing the processes of nature. Moreover it has been the temptation of philosophers of all times, and even of Harvey himself than whom none had put better the conditions of scientific method, to suppose that by means of abstraction kinds may be apprehended; that thus they may get nearer to the inmost core of things; that by purging away the characters of individuals they may detect the essence and cause of individuation 42 (σπερματικὸς λόγος): not perceiving indeed that the content of notions is, as Abélard had pointed out plainly, in inverse proportion to their universality. Like Sidney’s hooded dove, the blinder they were the higher they strove27. For example: from a lump of silver a medal is struck; from many lumps of silver many medals are struck, each different from the other: let us eliminate as accidents the notions of silver, of the blow of a hammer, even of particular features of the devices, and we shall reach the idea of an agent with a type or seal, or of such an agent with many seals, or ideas, who may thus individualise indifferent matter; or, to penetrate deeper into abstraction, who may transfer forms of his own activity to motionless 43stuff. It is my part to-day to show that before motionless stuff—before the problem of the “primum” mobile”—even Harvey himself stood helpless; helpless yet fascinated by the indulgence of invention when, in the De motu cordis, or the De generatione, he permitted himself to carry contemplation beyond the sphere of his admirable experiments. “Natural, vital and animal spirits” indeed he would have none of; saying well that he should want as many spirits as functions, and that to introduce such agents as artificers of tissues is to go beyond experience: yet in his need of a motor for his machine he was not able to divest himself of the language nor even of the philosophy of his day; he referred the cause of the motion of the blood, and therefore of the heart, to innate heat28. In his day he could not but regard rest and 44motion as different things; and motion as a super-added quality. In denying the older opinion29 that the heart is the source of motion, of perfection30 and of heat, he put the difficulty but one stage back; and, when in the treatise on Generation he propounded his transcendental notion of the impreg45nation of the female by the conception of a “general immaterial idea,” we find in him realism still very much alive indeed. Had Harvey been content with innate heat he would have done well enough; but the innate heat of the blood, as he explains it, is not fire nor derived from fire; nor is the blood occupied by a spirit, but is a spirit: it is also “celestial in nature, the soul, that which answers to the essence of the stars ... is something analogous to heaven, the instrument of heaven.”

In denying that a spirit descends and stows itself in the body, as “an extraneous inmate,” Harvey advances beyond Cremoninus, who then taught in the chair of Averroistic philosophy in Padua; for, says Harvey, I cannot discover this spirit with my senses, nor any seat of it. In another passage indeed Harvey warns us “not to derive from the stars what is in truth produced at home”; in yet another he tells us that philosophers produce principles as indifferent poets thrust gods upon the stage, to unravel plots and to bring about catastrophes: yet he concludes that “the spirit in the blood acting superiorly to the powers of the elements, ... the soul in this spirit and blood, is identical with the essence of the stars.”

46Thus the riddle which oppressed these great thinkers, from the Ionians to Lavoisier, was in part the nature of the “impetum faciens31”—of the Bildungstrieb. What makes the ball to roll? Does heart move blood or blood move heart; and in either case what builds the organ and what bestows and perpetuates the motion? Albert of Cologne, and at times even Aristotle, as we have seen, were apt to leave moving things for abstract motion, and to regard formulas as agents. Telesius again, the first of the brilliant band of natural philosophers in Italy of the xvith and xviith centuries, was still seeking this principle of nature in the “form” of the peripatetics. Gilbert regarded his magnetic force as “of the nature of soul, sur47passing the soul of man.” Galileo, although willing to conceive circular motion as perpetual32, and even self-existent, was unable thus to conceive rectilineal motion.

Harvey, then, and other naturalists of the time, including Cæsalpinus and after a fashion even Descartes, followed the medieval world and Aristotle in deriving the source of motion directly from the spheres. Harvey says with Dante, “Questi nei cuor mortali è permotore.” The attraction exercised by external supreme mind (not associated with matter) and its thoughts bring the material cosmos and its parts into regular movements. The so-called Αἰθήρ, or fifth element, “στοιχεῖον ἕτερον τῶν τεσσάρων, ἀκήρατόν τε καὶ θεῖον” (De Cælo, cap. 2 and vid. Zeller II. ii. 437), under the name of the Quintessence, played a large part in the speculations of Lulli, Paracelsus and other chemical mystics. Till Copernicus transfigured the cosmos, and Galileo and Newton carried terrestrial physics into the celestial world, the heavenly bodies were regarded as animated beings, themselves set in motion by spheres, and, by propagation of their intense activity from sphere to sphere, 48animating all sublunary matter, wheels within wheels, even to its innermost particles. Aristotle’s view (Metaph. xi.) was as follows:—The stars and planets are in their nature eternal essences; that which moves them must itself be eternal, and prior and external to that which it causes to be moved; likewise that which is prior to essence must itself be essence; and so on for a hierarchy of eternal essences: thus Heaven if not God is a divine embodiment (Θεῖον σῶμα); and this πρῶτον τῶν σωμάτων he regarded as the essence of heaven and stars, and the cause of animal heat in living beings. Thus the transition from Aristotle to the later conception of the celestial bodies as themselves animated beings was easy; indeed the attribution of intelligence to the spheres goes back at any rate to Plato (Timæus), if not to Pythagoras; and was the foundation of astrology. In Harvey’s time there was still in Rome a basilica of the Seven Angels (the planetary essences). Much of this doctrine Harvey probably got from Cicero (Acad. i. ii. 39 and De Fin. iv. 5-12; vid. Krische), who speaks of “ardor cœli” as the whole astral sphere. If I am not mistaken Harvey somewhere advises Aubrey to study Cicero.

49Matthew Arnold thus regrets the old illusion:—

Of the origin of energy we have not solved the riddle, we have given it up; but instead of coming 50from without we know that it comes from within. As Mr Benn puts it, we have extended the atomistic method from “matter” to motion. Harvey’s contemporary, Francis Bacon, sagaciously guessed that heat is an expansive motion of particles; but he regarded heat and cold as two contrary principles. Almost in the same generation the brilliant John Mayow perceived a substance in the air “allied to saltpetre,” which passed in and out of the blood by the way of the lungs or placenta. “Innate heat” then gave way to phlogiston; but it was not till the discovery of oxygen and of the conservation of energy that we attained a theory of energy, and finally got rid of “matter and form,” and of all the thicket of metaphysics, relating thereto; through which in the day of Harvey no mind, however mighty, could have made its way.

In the history of medieval thought we must always bear in mind that in neither of its two periods were theology, logic, metaphysics, psychology, or even physics, fully differentiated; and before the Arabian literature they were not differentiated at all34. Logic, which for us is but a drill, and, like all 51drills, a little out of fashion, was for the Middle Ages a means of discovery, nay, the very source of truth; thus every man carried his own busy laboratory within him. The heirs of Porphyry and Boetius had no other method in their possession. The dialectically irresistible was the true (κατάληψις); thus was man to succeed “irrefutabile aperire secretum.” To begin to think before beginning to learn is a hollow business, yet then logic furnished the theorems which experience might illustrate at its leisure; and nature was contemplated under philosophy. The differentiation of psychology began with the translation of the De anima35, and the recognition of the relation of the percipient; hence, in the second period, Roger Bacon denounced the pretensions of logic, and John Duns, that brilliant backslider, forced them to an absurdity. Again, on the translation of the Metaphysics, theology parted into the studies of the doctrines of God and the soul, which belong to theology proper, and of being, in modes, kinds and 52universals, which belong to metaphysics. Medicine again was a confusion of spheres, as was theology; the care of the soul and the care of the body were the ends of knowledge, and their means contained all knowledge. Thus when we hear that Alcuin ordered the formal teaching of medicine, it was under the name of “Physica”; and not until the Physics of Aristotle came to light did the various branches of natural history become in their turn not only definite studies but also self-sufficient, aside from the art of healing. To this day the healer keeps the name of “physician”; and the subject at Cambridge the name of Physic. It is well to be reminded that although the soldiers of truth must be separated into several regiments, nevertheless for its edification the healing art must draw, directly or indirectly, on all natural science. Robert of Lincoln, Albert of Cologne, and all the Masters of that time studied medicine—that is τὰ φυσικά—as a solid part of knowledge, which in their apprehension was not only a whole but also a manageable whole. Even Francis Bacon did not realise fully the littleness of man in the presence of nature; he hoped that for his harvest man would on a right method—by, let us say, a reformed astrology and a reformed alchemy53quickly surprise the secret of her processes: thus Bacon was the last of the Summists. With the differentiation of the several spheres of knowledge, and the perception of the vastness and variety of each, man has ceased to hold not the unity but the simplicity of nature; and he has given up summaries: the theologian rules no longer in metaphysics and psychology; the physician is no longer the only naturalist.

Systems succeed each other but give each other the hand; it takes many a generation to kill a strong theory outright: realism, shaken by Roscellinus and Abélard, and scotched by Hales and Ockham, survived to mislead Harvey; and still it stretches its withered hand over us in the nursery, in the school, and in the great arguments of life36. Malebranche 54warned us against our deceptive terminology. “Ils prétendent expliquer, (he says), la nature par leurs idées générales et abstraites, comme si la nature était abstraite.” The methods of the English grammar schools are even now medieval in so far as their teaching begins, as it mostly does still, with abstract propositions.

Mysticism gathered over Germany; in Paris to this day nature is constrained in the artifices of logic and rhetoric; and to this day platonism, chiefly by the influence of the Florentine humanists and perhaps of the Cambridge school of Henry More, has moulded both thought and language in England. John Hunter conceived a “materia vitæ diffusa”; and but yesterday Huxley had to say of Owen’s theory of “spermatic force” that an artillerist might as well attribute the propulsion of a bullet to “trigger force.” We profess Aristotle, and we talk Plato. Even by men of science it is daily forgotten that the only being is the particular. After the Faith then, realism—the belief in principles and kinds having external existence, and in formative essences to be reached by abstract thinking—stood another adversary against natural knowledge.

55But, stronger even than realism, was a third adversity—the pride of the human mind. Socrates, although, for ethics and politics, he initiated the inductive method, was disposed to regard physical speculations as but a rational pastime37, and the political and ethical study of man as the only serious engagement of thought. Aristotle took up natural knowledge as an encyclopedist38; he rarely verified his facts and he made no experimental researches39. The medieval church held that “ex puris naturalibus cognoscere” was a 56meagre and might be a mischievous amusement; and it sought to confine speculations to final causes, that is to the animation of the world by an intelligent Being, as man animates his own instruments: though, as Roger Bacon declared, final causes must have physical means. Even Locke thought nature to be hopelessly complex, and urged that ethics is the proper study of man. The asceticism derived from the East, disdainful of carnal things, brought the dualism of matter and spirit into monstrous eminence; and, in respect of medicine, in a few generations it turned the cleanest people in the world into the most filthy40. Moreover, are we not bound to admit that, as ultimate analysis was dangerous to the synthesis of the Faith, so for unwieldy and unstable societies in which ethical and political habits had not yet become engrained, to descend from transcendental explanations to explanations by lower categories was fraught with some danger to lofty and imposing standards of custom and conduct? Nature is too base, says St Anselm, 57for us to argue from it to God; we must argue from God to things. Analysis is a disintegrating function; the departure of the scientific enquirer is rather from below upwards: it is not only his bias but also his deliberate method to decline to use the discipline and the conceptions of higher categories until he is satisfied that those of the lower are inadequate. A certain natural process may not be attributed to those of chemistry until those of physics are proved to be inadequate; to another process biological conceptions and methods are denied until those of physics first, and then of chemistry, have been tried and found wanting; psychological conceptions are denied to another until in their turns the physical, the chemical, and the physiological are exhausted41; and so on: and within each category the same economy prevails. Now this scientific economy, perhaps first formulated, or effectively used, by William Ockham, in the phrase “entia non sunt multiplicanda”—known as “Ockham’s rasor”—is what is called now-a-days “materialism”; and there is no doubt that the method, legitimate, nay, 58imperative, as it is in natural science, may in custom and conduct engender a personal and collective habit of apprehending in lower categories, and even of contentment in them until strong reason be shown to go higher42. A higher order of ideas is put in a lower order of language; the “ὁδος εἰς τὸ κάτω” of Heraclitus. The danger of this attitude lies in loss of effort, of aspiration, and even of imagination; he must stoop on the weary oar who, knowing no anchorage, is ever stemming the drift. Notwithstanding is there in history any lesson sadder than this, that where ideals have been loftiest sin and failure have most abounded? a lesson from which Carlyle learned that “the ideal has always to grow in the real, and often to seek out its bed and board there in a very sorry way.”

Almost to this day then the mechanical arts, presumably concerned rather with the lower categories, have been regarded as base; and the craft even of the laboratory as unworthy of great souls. Anatomy had to labour against antipathy both ecclesiastical and popular; chemistry and mechanics were 59gross pursuits, unless endowed with the perilous distinctions of alchemy and sorcery. Unfortunately this charge upon the dignity of man was made heavier rather than lighter by Petrarch, and by the later humanists of the Renascence; even in the 17th century we find in Oxford that Boyle was bantered by his friends as one “given up to base and mechanical pursuits.” As Boyle himself put it in his delightful way—“There are many Learned Men ... who are apt to repine when they see any Person capable of succeeding in the Study of solid Philosophy, addicting himself to an Art (Chemistry) they judge so much below a Philosopher, and so unserviceable to him. Nay, there are some that are troubled when they see a Man acquainted with other Learning countenance by his example sooty Empiricks” ... “whose Experiments may indeed be useful to Apothecaries, and perhaps to Physicians, but are useless to a Philosopher that aims at curing no Disease but that of Ignorance.”43

60

Lord Herbert of Cherbury, who early in the seventeenth century attended lectures at Padua, opined that natural science deals with “ignoble studies, not proportioned to the dignity of our Souls.” In the eighteenth century indeed, grave English physicians, humanists who forgot how Aristotle had exclaimed that marvellousness lies in all natural phenomena, scorned the trivial curiosity of John Hunter respecting flies and tadpoles.

It is part of my argument to-day to point out one evil of many which this prejudice has wrought for medicine. The progress of an applied science dependent as it is upon accessions of advantage from other arts, yet on the whole is from the simple to the complex; from facts of more direct observation to those of longer inference: and this path was the more necessary when the right method of inference—the so-called inductive method—had not been formulated, and indeed was barely in use. Now in medicine, from Homer to Lord Lister, direct observation and the simpler means of experiment have obtained their first-fruits on the surface of the body. In Homeric times surgery was the institution of medicine, and kings con61cerned themselves with the practice of it. From Erasistratus to Celsus physicians of all schools practised medicine and surgery as one art. Galen urges the unity of medicine, and Littré points out that this unity is maintained in the Hippocratic writings. In the Middle Ages the ascetic contempt for the body—partly Stoic, chiefly oriental,—the barren alliance of medicine with philosophy, and the low esteem of mechanical callings hid from the physician the very gates of the city into which he would enter. Francis Bacon says of the physicians of Harvey’s day, that they saw things from afar off, as if from a high tower; and, again, that after the manner of spiders they spun webs of sophistical speculation from their own bowels. Surgery, by virtue of its imperative methods, was kept clear of philosophy on the one hand and of humanism on the other; and in Paris the establishment of the Collège de St Côme, afterwards the Academy of Surgery, protected the higher surgery against the rabble of barbers. Upon the raft of anatomy and surgery, with some clinical aid from Salerno, positive medicine crossed the gulf between Byzantine compilations, monkish leechcraft, Arab starcraft62 and alchemy, and the scientific era of Harvey44. But physicians were not only blind to the great services to the whole art of medicine of the surgical school of Lanfranc in the fourteenth century, of Guy de Chauliac in the fifteenth, and of Paré and Gale in the sixteenth century, advances even accelerated in the seventeenth, but they ignored also their very origin, and even withdrew from fellowship with the surgeon; to our grievous harm from those days unto our own45. Surgery was excluded from the Faculty of Medicine of the University of 63Paris; and from the Royal College of Physicians of England, which was, and is still, enabled by charter to teach surgery, and to grant licenses therein. Fabricius, the master of Harvey, was fortunately as great a surgeon as anatomist, and such was Fallopius. In this College Harvey lectured on anatomy and surgery, and he left his surgical instruments to us; for us Caldwal founded a lectureship in surgery which has been allowed virtually to lapse. From the progress of anatomy which, under the protection of the Italian nobles as formerly of the Alexandrian, went hand in hand with surgery, physicians drew then little advantage; and so in part perhaps it came about that although Vesalius, Fallopius, and Fabricius broke up the traditional anatomy of Mundinus, yet anatomy did more even for the fine arts than for physiology; and medicine at the end of the Middle Ages had not recovered the standard of Alexandria. Against this adversity also had to contend the founder of physiology whom to-day we celebrate.

Such were the chief adversities (vid. Appendix on Astrology) under which the naturalist suffered, but natural knowledge was never stifled; let us now turn our eyes to another point of view, from64 the oppression to the gradual enfranchisement of knowledge.

Necessary for the welding of western society in the Middle Ages as was authority in all spheres of thought and action, and, heavy as the price of its inertia has been since its work was done, yet in the celebration of the founders of natural science it would be untrue to assume that before them, even in the earlier scholastic period, the indomitable spirit of man had lain under tyranny in silence. “Μένει τὸ θεῖον δουλίᾳ περ ἐν φρενί.” The way had been prepared for them. By the Crusades of the twelfth and thirteenth centuries fury and devastation were diverted in part from Europe, and hurled upon Asia; which soon closes up again. The naïve serenity of the Faith was gone, but as its great minsters arose it forgot its dangers; and the social bonds of orthodoxy rudely shaken were renewed. The Schools grew as great as the churches: Naples, Pavia, Bologna and Padua; Paris, Orleans, Bourges, Toulouse, Montpellier, the Sorbonne; Oxford and Cambridge. Even the Friars Preachers and Minors were driven to fight with the new weapons; first rivalling the universities, then possessing themselves of their chairs.65 But philosophy, which had lent much to the Faith46, gained nothing from it; and to philosophy rather than to the Church the sciences looked for their principles and methods. In physics the experimental method was creeping into life; and the substance as well as the form of old controversies was changing. Thus through all these generations was rising a leaven of free thought, and its reforms may roughly be put in a twofold division, into the reform of tradition, and the reform of method; the reform of texts being again divisible into two periods—the Arabian, or second scholastic, and the modern or Renascence period. The chief monuments of learning were stored in Byzantium47 until Western Europe was fit to take care of them. In the peace of Theodoric, in the peace of Charlemagne, under Alfred at Winchester, the arts and 66sciences had scarcely found breathing-time, and no sure establishment48. Cassiodorus is said to have directed the Benedictines of the sixth century to read Cælius Aurelianus, a Roman adaptor of Soranus of Ephesus; but medical lore consisted of little beyond some relics of the Roman schools, handed on in prose or verse compilations which the teacher read to his class, and explained so far as he could. It seems that medicine was not taught formally until so ordered, in 805, by Charlemagne; probably by the advice of Alcuin, the founder of the learned tradition at Fulda, the founder, we may almost say, of the neo-latin period, and some time headmaster of my own school of St Peter at York. The influence of the School of Salerno, relatively excellent as it was in the domains 67of clinical medicine and of public health, never made its way into the general stream of Western culture. Religious wars and persecutions had driven Greek learning eastwards, as in the case of the Nestorians from Antioch to Persia; Hebrew and Syrian sages49 translated some classical texts, and 68from these again the Arabs, in their brief and brilliant culture, made translations; for no Arab sage knew Greek. The palace of the Spanish Caliphs in the tenth century was a workshop of translators, and a huge storehouse of books. The learned and ubiquitous Jew carried texts and translations from Bagdad to Morocco, and from Morocco to Toledo, Paris, Oxford and Cologne; but translations made in Bagdad in the ninth century did not reach Paris till the eleventh or twelfth.

Among the earliest of these renderings in the West were works on medicine, mathematics, and astronomy, which in the Schools of Toledo and Cordova, by Constantinus Africanus at Monte Cassino (including certain treatises of Hippocrates and Galen), by Gerard of Cremona (a Salernitan 69scholar), by Michael the wizard50, and by other hands, were converted into Latin; and, thus doubly disguised, and half buried in glosses which not only overlaid the text (“oscura glossa dov’ é piana la lettera”) but often supplanted it, were received with pathetic eagerness by the ardent scholars of the West. Aristotle, for instance, was now taught in the schools of the West from a Latin translation of a Hebrew translation of an Arab commentary upon an Arab translation of a Syriac translation of the Greek text51. Even in the sixteenth century medicine and anatomy were taught wholly from books; and teachers were forbidden to use other than prescribed books. Students began with the “Articella” of the Venetian physician Gregorio Volpi, a compendium of translations with wood70cuts, published in 1491; they advanced to the Aphorisms, the Diet in Acute Diseases and the Prognostics of Hippocrates, overlaid with Syriac, Arabic and Spanish apparatus and glosses; to the Ars Parva of Galen; to the first and fifth Canons of Avicenna, with glosses; to the ixth Book of Rhazes, Honein, Aegidius Corboliensis, and perhaps some of the translations of Constantinus Africanus52;—this was the lore that ruled the medical schools even to the birth of Harvey. Disputations among the students were incessant, both “inter se” and “sub cathedrâ”; but it is doubtful whether these did more than sharpen their dialectical wits. Botany, regarded by the galenists as the secret of the divine dispensary, was always more forward; every medical school had its physic garden, professors carried their students abroad to gather herbs, and Herbals, Dispensatoriums and Kräuterbücher were much in 71advance of the Bestiaries, mostly after Pliny’s kind, the chief of which, largely an original work, was that of the well-known Conrad Gesner.

Some hundred years before the appearance of the Arabian Aristotle, which marked the second scholastic period, we have seen that the shadow of the Faith and the savagery of the peoples had not quelled such teachers as Roscellinus and Abélard, who fought for rationalism so sturdily as even then to threaten the ascendency of realism and the persuasion of supple and plausible demagogues like Anselm of Laon—that “sterile tree” as Abélard called him,—and actually to determine the first period of the Middle Ages. Happily the Arabian scholastic philosophy took its root in Alexandria when neo-platonism had veered towards Aristotle53, and it was more uniformly peripatetic than the earliest Christian Scholasticism. It is one of the notes of the greatness of Aristotle that, even thus garbled and glossed, his power made itself felt by the mouths of the great Franciscans Alexander Hales, Roger Bacon, and William Ockham. The Organon had been expounded in Paris in 1180, and about the same 72time Alexander Neckam cited the Posterior Analytics, the Topics and the De anima; but Hales was in possession of the whole, or almost the whole, of a more or less corrupt Aristotle, which he turned upon theology.

Roger Bacon was the first of the natural philosophers of the West, and the only eminent forerunner of Harvey and the other pioneers of natural science in the seventeenth century. As erudite as Albert, Bacon was more inventive, freer of spirit, more disposed to scientific method, better aware of the hollowness of authority, better aware that truth can be found only in free reason guided by experiment. Unfortunately as an author he was as dull and ineffectual as Francis Bacon was rich, animated and impressive. That indeed this premature renascence, without scientific methods or sound tradition, should have failed54, that its light was but the phantom of dawn55, is no matter for surprise; yet from this time forward the 73methods of Cyprian and Athanasius lost their undisputed sway. This earlier renascence made the second period of the Middle Ages: the period distinguished by the Arabian version of Aristotle; by a check to the chimeras of realism; by some liberty of secular knowledge, for even bishops came out of the Mussulman school of Toledo and arrayed themselves in vestments of Arab work decorated with sentences from the Koran; and again by the coming of the friars, the Dominican and Franciscan especially, whose influence upon the thought of the Middle Ages was considerable, and soon rivalled even that of the universities, wherein later, as we have seen, they filled some of the chairs.

The issues of all schemes of thought led indeed as inevitably to natural science, as all ways to Rome. The logic and rhetoric of the learned Dominicans—the watch-dogs (“Domine cani”) of the Lord against the wolves of heresy,—culminating in the systems of Albert and St Thomas, by their rationalism defined, and in defining restricted, the dominion of the Faith. Keen defenders of the Faith recognised this danger, and whimpered even against Albert that “philosophiam profanam in limen74 Sanctæ Theologiæ intromiserit; ... in ipsa sacraria Christi56.” Men got used to reason, and great protestants, such as Robert of Lincoln, had put justice 75and honour before ecclesiastical politics57. Then the few Greek texts found their way into the West, and in the thirteenth century Albert and Aquinas possessed themselves of Greco-latin translations of some treatises of Aristotle58. And in the history 76of the comparatively unlearned Friars Minors we find, as elsewhere in the history of thought, that 77mysticism was less unfavourable to natural science than the passionate dogmatism of Clairvaux, or the dogmatism by ratiocination of St Thomas; the Victorians, as Gerson after them, despised reason rather than feared it; they would not accept the services of philosophy even with its wings clipped.

Mysticism makes for individual religion, as with Glisson and Newton, rather than for a Church, 78as Albert was clear-sighted enough to foresee; if science undermines dogma, mysticism relaxes or neglects it: hence, as clerks only could teach, it may have been that independent thinkers like Hales, Roger Bacon, and Ockham entered the Franciscan order59. Indeed the science of Pietro di Abano 79(1250-1320), which laid the foundations of medicine at Padua, and inspired the frescoes of the Salla della Ragione, was occult and mystical.

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In the thirteenth century then the conflict with the provisional synthesis of the Faith had become imminent and menacing. The faith, the chivalry and the learning of the Saracens led men to feel that without the Church all might not be utter darkness. Albert owed as much to Avicenna81—“the Albert of the Orient”—as St Thomas to Averroes; pagan sages technically damnable yet “mighty spirits,” worthy of reverence. Dante put in Hell, but on green meadows in an open place, lofty and luminous,—esteeming himself exalted by the sight of them,—not only Aristotle, Plato and Socrates, but also

Universities were founded in France, England, and Italy. Frederick the Second protected the Arabs, and even aped them; Ghibeline indeed almost signified freethinker. From the Roman de Renard, from the candid Joinville, from Boccaccio, we may infer that the very foundations of the Faith were sapped; and therewith, for good or ill, both moral and political bonds were loosened. But the natural Science which made the second renascence irresistible was absent in the first: the consolidation of the European peoples was not compact enough for a rehandling of the conceptions of religion and morals, too incomplete even for the latitude of opinion which, in nations as in individuals, is apt to slacken swift and consentient82 action. The toleration and scepticism of the first renascence had causes no deeper than a general enlargement of experience and thought.

To appreciate the influence, covert or overt, of scepticism in the Middle Ages we must clear the meaning of the word. Under the yoke of tribal custom scepticism can hardly arise, there is no place for the half-hearted, as all men feel alike so all think alike: scepticism arises when beliefs are put into formal propositions. Then, as experience and comparison enlarge, we detect scepticism in three forms or degrees: namely, doubt of a particular creed; doubt of all unverified propositions; and doubt of the validity of reason itself, whether in respect of the supernatural only or of all argument. It is remarkable that this last, the most devastating of the forms of scepticism, has come from the ranks of the faithful (Pascal, Hamilton, Mansel), who in resentment of the attacks of reason have turned blindly to rend reason herself. No civil society has been without scepticism; even in ages of most prevalent faith some current of doubt has flowed under the surface. In the Ionian philosophy the place of scepticism was only restricted in so far as many aspects of the subject-matter were not before83 those thinkers; for instance no Greek philosopher would have separated faith from reason. In the well-known words of Hippocrates, “οὐδὲν ἕτερον ἑτέρου θειότερον οὐδὲ ἀνθρωπινώτερον, ἀλλὰ πάντα θεῖα.” “The Greek boldly set up his academy by the side of the temple.” Even Protagoras never taught the futility of all reason, nor even the inconstancy of sensation which indeed is doctrine rather than scepticism. Neo-platonism had its scepticism in the first two forms, covering even the ground of the modern agnostic. Agnosticism does not deny the existence of the ladder, but asserts that the ladder begins and ends in the clouds; it is consistent therefore with ethical and practical activity. When Abélard said “Dubitando enim ad inquisitionem venimus, inquirendo veritatem percipimus,” if a sceptic, he was no infidel. Even in the thirteenth century it was never doubted that truth is attainable, nor indeed that the Faith contained the truth. The scepticism of that age was rather cautious and controversial than faithless, and in practice divine discontent rather than indifference (ἀταραξία). Pyrrhonism on the other hand leads to slackness of ethics; either to the insouciance of Horace and Montaigne, or to the attitude of the seventeenth84 century in Padua (Pomponatius) and elsewhere, when the “economy,” ironic or disingenuous, of allotting their several spheres to reason and dogma, if not first invented, became as fashionable as in the pulpits and in the drawing-rooms of Mayfair. “Comme savant j’ignore tout; comme citoyen je crois tout.” The Hypotyposes Pyrrhoniœ of Sextus Empiricus, whose influence in the times of the Renascence was considerable, was not translated till the fourteenth century. The detachment of mind and shrewd wisdom of John of Salisbury foreshadowed Petrarch rather than Hume; and when John discusses what it is given to man to know, asking the frequent question, “Utrum contingat homini scire aliquid?”, we must not fall into the error of importing into his question all it connotes for ourselves. Likewise when James of Douay (in ms. De anima, quoted by Hauréau) roundly says, “Id quod recipitur ab aliquo non recipitur secundum naturam rei receptæ sed secundum naturam recipientis ... sicut recipitur ita patitur.... Sensus judicando de sua passione non decipitur” and so on, he knew no more whither this would lead than John Duns knew that his system must lead to that of Spinoza. That guardians of morals and85 social cohesion, from Cato to the Westminster Assembly, and from Samuel Johnson to Cardinal Newman, should have distrusted scepticism even as reserve of judgment, or indeed repelled it with fierceness; that priest, presbyter, magistrate and moralist have tolerated irony, or even license, rather than vigilant and radical criticism of doctrine, is intelligible; and within limits springs from a justifiable apprehension. For the gay and indolent sceptic veers to conformity, especially if he mistrust the competence of reason; while the active sceptic endangers the theory of his society, and of the sanctions upon which all moral conduct temporarily depends. Hence the bitter condemnation of Galileo, “Perish all physical science rather than one article of the Faith be lost.” Happily it is true that during times of transition piety and good conduct survive by virtue of “inertia,” that is by tradition, social pressure, custom and sense of fitness; and it is true that in times of transition, as in our own times, halting thought is quickened for a while by plenitude of emotion, and wealth of æsthetic impressions makes amends for poverty of ideas; yet that morals are based on a theory of life is a truth still deeper and more abiding, and this deeper86 truth it was the function of the “Ages of Faith” to root in the conscience of mankind. “Abeunt studia in mores.” As contrasted with Pyrrhonism, scepticism in its normal sense, while it declares that the conformity of notions with things in themselves cannot be postulated, for lack of an external standpoint of comparison, and while it declines to be confuted by the “regressus ad infinitum,” for, having repudiated first principles it is prepared to be pushed backwards to remoter and remoter causes, is ready nevertheless to yield to assurance as facts are intercalated into inferences, and as inferences thus stiffened by verification are found to consist with each other and with the general context of experience.

If in the Middle Ages these various attitudes of mind were not fully distinguished, yet scepticism was moving variably towards the demand for verification on which all natural science is based; and the reaction was not long delayed. In the thirteenth century the culture of Omeyad and Abasid caliphs failed; by the end of the century philosophy was denounced and its books were burned; the generous and learned Frederick dashed himself in vain against the Papacy; Clement, the protector of87 Bacon, was dead, and during the two following centuries, in Spain at any rate, freedom of thought was crushed out by the Church. In the fourteenth and fifteenth centuries the very name of Averroes—of “the mad dog who barked against the Christ,” the “Averroem impium καὶ τρὶς κατάρατον” of Erasmus—began to signify loose life as well as free thought. Of this resentment there had been no trace in Albert or St Thomas; but Imola had begun to wonder why Dante had treated so well Averroes who, if the Great Commentator, was yet the father of infidels. The Dominicans controlled the fine arts, and for them,—at Pisa, at Siena, in the Spanish Chapel,—Orcagna, Gaddi, Spinello Aretino, Simone Memmi abased the Empire, Averroes, and the new learning far more intolerantly than Dante had done; and exalted the Pope, with his handmaids Theology, Grammar, Logic, and Rhetoric. In Santa Maria Novella, Memmi represents the triumph of the Dominicans in theology, Gaddi in philosophy; St Thomas and the Dominicans march triumphant over Arius, Sabellius, Averroes, and Savonarola. Thus in the Middle Ages Averroes appeared in two forms—first as the Great Commentator, later as the blasphemer and father of88 infidels of the Campo Santo and of Santa Maria Novella. In the fifteenth century the Council of Constance forbad the laity to teach, under a penalty of forty days’ excommunication. In the sixteenth, in Granada, Ximenes burnt, it is said, 80,000 books of Arab philosophy, as Torquemada did for Hebrew in Seville; medical works, however, such as the Colliget60 of Averroes, and his Commentary on Galen, were spared.

With the greater renascence the second period of Scholasticism, and indeed the Middle Ages themselves are closed. With the fall of Constantinople the stream of learning, driven eastwards in the first period of the Middle Ages, set westward again. Exiled grammarians now found their shelter under the protection of the “literate tyrants” of Italy, and with their spoil of manuscripts enriched the libraries of Rome and Venice. The Universities of Bologna and Padua from their foundation became notable for independence of thought; and, on the revival of learning, for their peripatetic 89teaching as opposed to the platonism of Florence, where, however, a spirit of accurate learning was nurtured in the deciphering and verification of texts. The political and commercial ambition of Venice, the Holland of Italy, of which State Padua was the learned quarter, and the inflow of liberal thinkers from other nations, kept her aloof from the fury of the Catholic reaction of the sixteenth century, which ruined Paris; thus in North-east Italy the spirit of modern science awoke sooner than in England or in France, and inquisitive students, both home and foreign, were attracted rather to Padua and to Bologna than, as in earlier times, to Paris.

In so far as Scholasticism may be described as a temporary reconciliation of Aristotle—that is, of natural and secular methods—with the Faith, this end had been attained, if at all, by St Thomas; in St Thomas Scholasticism culminated. But no such artificial truce could abide; and the issue of the chief scholastic controversy was to be determined by one greater than St Thomas. The pilgrim to Ockham, sitting in its church beneath the seven lancets of its twelfth century window, may be solitary also in his memory of one of the greatest of Englishmen,90 who saw that light six long centuries ago; yet a child rather of our age than of his own. As Abélard had closed the gates upon the neo-platonist tradition of Alexandria, so Ockham closed them against realism in all its forms; and the Church cursed them both. In his own person the occupation of professorial chairs by Franciscans came to an end; Paris and the Thomists could not consistently oppose nominalism; Duns the Northumbrian had inflated realism into a monstrous phantasm, and speculative reason had to submit to the yoke of verification. Yet what could nominalism do for theology, or for clerical schools? The Franciscans for the most part had turned to mysticism, and thenceforth the man of science and the devotee were to work apart. Furthermore, by Ockham philosophy gained a new meaning, or lost all meaning. Before Locke, Voltaire, and Kant, Ockham demonstrated that faculties were not substances; and differentiated logic, psychology, and natural science61.

But if, as I have said, the way for Harvey and the other pioneers of natural knowledge was thus prepared for them, it was still, even in the seven91teenth century, dark, rough and perilous. As in all times of transition, still the weight of defunct systems rolled inertly along; and while the new forces seemed to slumber stresses were accumulating. In Oxford and Cambridge the influence of Linacre, and even of Caius62, seems to have been rather humanist than scientific63; in Oxford the text rather than the inspiration of Aristotle prevailed, while in Cambridge the platonist school, of which the charming Henry More was the leader, full of inspiration as it was, soon evaporated into mysticism, or obscurantism. Bacon and Harvey seem to have left Cambridge—for Paris and Padua respectively—as Locke left Oxford64, under some discouragement. Of Paris the great days 92were over; it was in Padua that medicine, long degraded or disguised, was now to prove her lineage as the mother of natural science, and the truth of the saying of Hippocrates that to know the nature of man one must know the nature of all things. But on Harvey’s arrival, Padua, which had become the first school of Medicine in Europe, as was Bologna of Imperial Law65, was settling down upon the lees of the once noble school of Averroes: a discipline which, by its original strength, by its freedom of thought, and by the ascendency of its professors, had withstood in the thirteenth century the direct condemnation 93of the brilliant fourth Lateran Council; and in the sixteenth the thunders of Trent. Padua adopted Averroism, in the fourteenth century, because of its medical contents; in the two following centuries this system was emptied of heart and life, but pattered and mumbled by pretentious pedants in North-east Italy it prevailed till the seventeenth, when after a reign of three centuries it was succeeded by the Cartesian. Of its phases in the sixteenth century Patrizzi said, “Ingens ab his philosophorum numerus ac successio manavit quæ in Aven Rois hypothesibus habitavit.... Inde dubitationum ac quæstionum sexcentorum milium numerus manavit” (Disc. Peripat. Vol. I. Venet. 1571; quoted by Renan, Averroès). The name of Averroes, “perfectus et gloriosissimus physicus, veritatis amicus et defensor intrepidus,” became the shibboleth of philosophers who held the different nature of the heavenly bodies against the “moderns” who alleged the identity of matter in sky and earth, and the doctrine of the universal against the individual soul.

Yet, in spite of Petrarch’s gibes, Averroism in its spring had nursed Padua with the milk of natural science. Even in its decay—for all teaching of philosophy, as a separate study, must decay—the94 triumph of the Faith was premature; like Jansenism, the School of Averroes, effete as it became, held the ground for a more dangerous invasion, for Leonardo, Telesio, Bruno, Gilbert, Sarpi, Campanella, Galileo, and Harvey; for the pioneers of truth, not as consistency with tradition, not as an alchemical search for real essences, nor indeed as wisdom only; but as the verification of premises. This fuse Paracelsus fixed to the shell which burst upon the Faith, upon Scholasticism, upon Galenism, and even upon humanism, “So Christus spricht ‘Perscrutamini scripturas’; warum soll ich nicht sagen ‘Perscrutamini naturas rerum’?” The Credo ut intelligam of Augustine and Anselm of Canterbury; the Intelligo ut credam of Aquinas belonged to the past; and men began to cry “c’est Dieu qui nous veut hérétiques.” A criticism based upon a larger sense of the relativity of knowledge, and, in the sixteenth century, a new scepticism66, which pierced even into the Vatican, as to the very possibility of knowledge of the nature of being, were preparing the way for new conceptions: but in ethics meanwhile men were falling either into the carelessness of the scoffer or into the anti-95nomianism of the mystic. The brilliant futilities of the medieval dialectic had led to weariness of spirit. After vain and vexatious jugglings with the dry tissues of unchastened ratiocination, simplicity and even ignorance brought their solace.

As from Florence humanism invaded English letters, so the Averroistic physician of Padua became known, even in Chaucer’s day, as a man of secular rather than of Scriptural learning. In Padua, while Galileo was teaching Euclid for a pittance, chairs of Averroistic philosophy were filled by highly paid professors, whose “rotuli” or portfolios, many of which now rest in the dust of the libraries of North Italy, were handed down from one to another in deadly routine. Virtually, however, the Averroistic tradition ended with a contemporary Paduan professor, Cremonini, lifted into fame by Harvey’s refutation in the De motu cordis, and by his own repudiation of the satellites of Jupiter, bodies for which Aristotle had made no provision. The coarseness and pedantry of the Averroistic freethinkers, whose scepticism lacked the elegance and sprightliness of the French, and their bastard language—mongrel of Greek and Arabic—revolted the humanists also: “Nihil96 indoctius, nihil insulsius, frigidius.” “Unum te obsecro,” Petrarch had said two hundred years before (in his invectives against doctors, whom he classed with astrologers, as afterwards indeed did Harvey more or less), “ut ab omni consilio mearum rerum tui isti Arabes arceantur atque exsulent.” “De medicis non modo nil sperandum sed valde etiam metuendum67.” The doctors in their turn did not hide their disdain for poets. Whether justly or unjustly, the Doctors of Medicine were classed with astrologers and alchemists; the latter of whom Harvey repudiated frankly, not altogether avoiding a contempt for chemistry itself. Clad in fine raiment, with rings on their fingers and golden spurs on their heels, they rode tall horses, and gave themselves pompous airs. The humanist would rather pose as a believer than as an underbred infidel; the Averroist protected the license of his doctrines and manners by subterfuge and ironic evasion: and humanist and Averroist alike stood by at the burning of Bruno68.

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It must not be supposed, however, that these pompous pedants had it all their own way, and that Medicine was not better justified of her children. It is full of interest for our present purpose to read in the preface by Thomas Junta to the Edition of Averroes (1552), “Plerique omnes juniores medici jam intolerabile in Arabum Mauritaniorumque dogmata odium conceperunt, ut ne nominandi citandive locus relinquatur; principes etiam Hippocratem atque Galenum habere nos prædicant.” This enlightenment seems to have come about in some part through the teaching of Thomæus Nicolaus Leonicus69, who began to lecture, for the first time, from the Greek text of Aristotle (there were chairs thenceforth for both the Arabian and the Greek Aristotle) in 1497.

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It was with Galileo however that scientific research began in Padua, at any rate for professors; and Galileo may be venerated as the first modern naturalist to set the experimental method conceptually, coherently, and thoroughly before himself, including the deductive side of it. In the Harveian Oration of 1892, Dr Bridges reminded us that Galileo conceived of motion and energy as calculable quantities, and drew our attention to those most interesting experiments wherein Galileo applied the pendulum to measure the rate and rhythm of the pulse. Roger Bacon had dwelt upon experiment, but scarcely upon methodical verification thereby. The chemistry of Albert of Cologne was but a return of the curiosity of Geber of Cordova (in the ninth century). Even Francis Bacon saw the method less clearly than Galileo had done; and, as the last of the schoolmen and encyclopedists, he made a place for it rather in literature and philosophy: he ignored, as the scientific Descartes welcomed, the cardinal discoveries of Copernicus and of Harvey70. 99 But if Galileo discovered the experimental method as a method, before Galileo the method was in use. Leonardo had laid down the rule of investigation of nature by experiment, and the aphorism that nature never deceives us; unfortunately his manuscripts were not published. In the first half of the fifteenth century Nicholas of Cusa weighed plants at definite stages of their growth in known weights of earth; and he weighed the moisture of the air. His contemporary Leon Battista Alberti of Genoa had done likewise. But above all the scientific forerunners of Galileo and Harvey stands William Gilbert, Fellow of St John’s College, Doctor of Medicine of Cambridge, Censor and President of this College, Physician to Queen Elizabeth, and Founder of the science of Magnetism.

The century dating from the birth of Galileo to the death of Harvey was perhaps the most brilliant in the history of modern knowledge. The discovery of Greek texts had destroyed the conventional Aristotle, the conventional Hippocrates and Galen; since the latter part of the sixteenth century Greek 100had been taught in the High Schools, philosophy was born again, and men found themselves no longer the slaves but the kin of the great ancients. Telesius, Bruno, Campanella vindicated natural science and liberty of thought. Galileo taught in Padua for twenty years, including the time when Harvey graduated there; Torricelli was a pupil of the great Florentine; in 1582, on the theory of Copernicus, Gregory reformed the Calendar, and thus laid the axe to the root of astrology; by Newton terrestrial physics were established in the celestial spheres71. Malpighi, who was to fulfil Harvey’s discovery and foresight, was born in N.-E. Italy in the very year (1628) in which the De motu cordis was published. In 1626 Boyle was creating chemistry. Anatomy, which had slept since its days in Alexandria, was fully awake. The Society of the Lincei was virtually founded in 1603; the Royal Society72 in 1645; the Academy of France in 1656. Clinical teaching, initiated in Salerno and advanced by the Consilia 101medica73, was formally established in Padua74, to be pursued in Heidelberg, Leyden, and Vienna. Thus was the study “De rerum natura juxta propria principia” unfolded, and the “Civitas Dei” gave place to the “Regnum Hominis.”

The “Regnum Hominis”! Yet when I look, from a respectful distance, upon the folios of the schoolmen, monuments, I am told, as empty as the Pyramids of Egypt, my mind turns back to the 102fiery and turbulent tribes which in the “deep but dazzling darkness” of the Middle Ages raged upon a barren land before the nations began; and I wonder if the ideas which awed them, swayed them, and welded them into stable societies were fancies as wild and sterile; and if the men who wrought them were mere traffickers in words. And then I wonder if we are glad that the riddle of the origin and issues of being, which tormented their eager hearts, is not solved, but proved insoluble: if we are glad that “sub specie hominis” the earth, no longer the nursery of eternal souls, is but a meteor in the sky; men and women but the gleam upon it; the sons of Heaven but companies of whirling stones, and the Father of Heaven an inaccessible idea.

The scholastic philosophies became inhuman only in their decrepitude. In the equal eye of history, the Middle Ages teach us that the slow and painful travail of natural science is not to be regarded as the belated labour of light in the womb of darkness, nor as a mere stifling of the growth of the human mind by tyranny and oppression, nor indeed as the arming of moral forces against brute forces, but as the condition of time103 in the making of societies on a necessarily provisional theory of life. They teach us that conduct in state and morals depends upon a theory of life; that although habits and even standards of ethics may abide for a time after the theory on which they were built is sapped, it is but for a time; that if the social discipline and fruition are to be renewed and enlarged it must be upon a new synthesis, as laborious and ardent as the former, and more true. Meanwhile the business of a nation, whether in war or peace, is first to be quick and strong in action, to be rational afterwards; and swiftness and strength come of union of wills and singleness of heart rather than of wisdom. Even within its borders freedom of opinion must awaken slowly; the nation strong enough to suffer irresolutions in its outward policy has yet to appear. Hence it is that we find in ruling classes, and in social circles which put on aristocratical fashions, that ideas, and especially scientific ideas, are held in sincere aversion and in simulated contempt.

The Greek was no heathen, suckled by nature and endowed only with her instincts; he sought in his mind to improve nature: but in the Renascence instincts were set as free as thought. In this104 passionate and adventurous time to preach the destruction of the animal instincts, or to crush them for the higher life, was a noble idea, but an impossible hope; the animal impulses are to be trained, not suppressed, and for this the help of science was to come. Yet science was to be not the hated rival but a necessary ally of religion. It is not within the province of science to answer the medieval searchings on the nature of being, nevertheless this threshold problem—“der Drudenfuss auf der Schwelle”—faces us still; and the world, so far as we have seen of it, has always demanded a provisional answer. To-day Professor James Ward offers it again in “Supreme Intelligence”; and Principal Caird (“Fundamental Christianity”) yearns for the knowledge of infinite being almost in the words of Plato himself:—“If,” he cries, “underneath all the phenomena of the world in which we live we can discern no principle of reason and order, no absolute intelligence and love, then indeed” this world is a “meaningless waste.”

Gilbert Galileo and Harvey, Maxwell Hertz and Darwin have taught men not that the speculations of the schoolmen were over-bold, for they busied themselves with no speculations bolder or105 more transcendental than are our modern theories on matter, on inertia, on the ether, or on the origin of life, but that metaphysics by “intercalation of facts” shall become physics, that, in the words of Descartes, concepts, if “μετὰ τὰ φυσικά,” “talia sint tantum ut omnibus naturae phænomenis accurate respondeant,” and that notions great and small shall be subjected to strict verification, so far as such tests can be carried; not that men shall deny themselves the rapture of touching that various instrument they find within themselves, but that they shall endure the drudgery of learning to play it in harmony with the orchestra of nature; not that they shall desist from imagining, but that before proclaiming hypotheses they shall be compelled to the humble task of making an infinite number of little piles of facts. The art of experiment can grow only with the growth of science itself; instruments of precision are not provided till men feel the need of them. The experimental verification of concepts is no mere alternative path, no mere renunciation, but a new birth; a birth into a dull and vexatious discipline for the impatient Hegelian, whether of the thirteenth or of the twentieth century, who believes that, as mind is the product of evolution, and so the sum106 and store of nature, “in dem Gedanken selbst das Wahre ist zu suchen75.”

The genius and courage concerned in a particular discovery or reform it were impossible to estimate; there is no method of determining the specific gravity of such adventures: moreover we are now so well used to the lights, bells, and soundings of the routes of scientific enquiry that it is hard for us to realise the pain and peril of fogs and contrary winds in voyages where were no such guides. Indeed no exposition of defects of methods can explain false habits of thought without a careful estimate of historical causes also, in what we may call the embryology of thought; for at no time were right methods of thought wholly wanting, or even wholly disregarded. But, as we approach Harvey’s own time, if on the one hand I have shown that Europe until he came was not ready for him, on the other hand I trust I have made it more easy to conceive the weight of the social 107systems, opinions, and prejudices against which his gigantic effort was made. For, brilliant as was the promise of the Renascence, yet in the time of Harvey, and in the generation immediately before him, the decay of the scholastic methods and the worldliness of the Church, which in the first half of the sixteenth century had favoured the advance of secular culture, had led to a reaction, not against Luther only but also against all liberal learning and science. In the Vatican, in the Sorbonne, in the Consistory, and even in the courts of justice it was proclaimed that as these studies make government more difficult, it were ill to encourage them! We have seen that the Faith, though undermined and no longer catholic, was aroused, and was terrible still; orthodoxy was crushing free thought in Italy; Alva was in Flanders, and had been visited by Catherine de Medici at Bayonne; in France the ruthless religious wars ended in the triumph of Rome; Europe was overrun by Dominicans and Franciscans; Trent was long pregnant with anathema. Contrary sects alike defied liberal culture; and four years before Harvey’s birth the wolf, hidden under another cloak, had torn Servetus—Servetus who shared with Colombo the honour of preparing the way for108 the founder of modern physiology. Even the genial conformist of the world, after his manner when he is scared, had turned brutal; he felt that the old conceptions upon which society was built for him, were suspected, and therewith society itself beginning to crack and split, yet he did not see that now by science only could society be recreated.

In Italy the Cinque Cento had taken its birth and nourishment chiefly from Latin sources and tradition. It regarded symmetry of form and rhetorical modes of passion; elegance was preferred to matter, and style to knowledge. Such a culture had not the seeds of life in it; in the middle of the sixteenth century its enthusiasms waned, its philosophy fell into routine, its style into mannerism; but science, not philosophy, not the Faith, was the heir of the Middle Ages. Science is not of Latin but of Greek inheritance, its sources are Greek; and with the westward swarm of the Greeks their older boons of eloquence and beauty were rivalled by their newer gifts of scholarship and natural knowledge. In France the leaders of this school were the Huguenots, the flower of the nation; in the Catholic reaction of the sixteenth century France scorched her own bloom,109 and Spain was blasted for ever. The humanists, who at best were false friends of science and medicine, were no longer powerful friends; their noble rage was suppressed by chill penury, and many of the most learned and zealous of them were vagabonds in Europe. Rhetoric, fine art, and even philosophy may flourish in slavery, learning and science can breathe no air but that of freedom; and freedom of learning was quenched in the blood of the Massacre of St Bartholomew. In 1540 had been founded the Society of Jesus, which then as now used science and learning, not as sources of truth or tests of conduct, but as tactics; putting on indeed the habit of the scholar, but only the more effectually to control research. Two years later the Spanish Inquisition was set up in Rome; and its shadow fell even over Venice, which abased itself to the imprisonment of Bruno. The great Venetian printers, some time reduced to the publications of decadent Averroism (p. 97), to avert bankruptcy had to print breviaries. Henry of Navarre, deserting Du Plessis Mornay, D’Aubigné, and De Thou, turned not only Roman Catholic but also ultramontane; and, if with his accession the Terror had ceased, social and political ostracisms, tests, and disabilities stifled all generous culture.

110The great University of Paris, which throughout the Middle Ages had been the heart of Christendom, the centre of its life and heat, which in the fourteenth century was at its splendid culmination, and which had meddled with no feeble hand even in the State, was waning even in the fifteenth century, when France was devastated by war and rapine and her schools were emptied. This University, which had savagely condemned Joan of Arc, and sent Nicholas Midi to preach a solemn sermon at the stake, “pro Joannæ salutari admonitione et populi ædificatione,” in the sixteenth century came out of the religious wars stripped of its endowments, and deserted by its students; its curriculum was crassly conservative, its philosophy buckram, its theology a petrifaction; its forty colleges were closed, grass grew in its courts, and its public disputations were abased to the decorous apostasy of the freethinker. Montpellier was dominated by realism (vitalism). Francis Bacon had done better to have gone with Harvey to Padua; almost in the year of the publication of the De motu cordis, the Parliament of Paris issued an edict that no teacher should promulgate anything contrary to the accepted doctrines of the ancients.

111Such was the check which, after the death of Leo the Tenth, had befallen liberal studies: no Bembo now secretly protected freethinkers; in Central Europe the generous Maximilian the Second, who died in 1576 while counselling tolerance in religion to Henry the Third, was followed by reactionary emperors. In England no doubt the sky was clearer; in the Salamis of modern civilization the malign pretensions of Philip were shattered, and the “spacious times of Elizabeth” were glorious in their outburst of freedom, adventure, and culture, Medicine, however, sinking in the sixteenth century, fell, in the seventeenth, into that reproach which has become a byword. All superstition was not within the Faith. When Harvey’s discovery, like an earthquake, had broken up galenism and other outworn sophistries, his masterly work stood forth not only against long-winded dialectics on ars sphygmica, critical days, coctions, derivatives, revulsives, and like abstractions bequeathed by realism and uncritical subservience to texts, but also against a more lurid background of folk superstitions—of vampires, witch-burning, magic, cabbalism, astrology, alchemy, chiromancy, and water-casting. For medicine, says Bacon, is associated with charlatanry as Aesculapius with112 Circe. In physics, terrestrial and celestial, Galileo, persecuted as he was, had some current with him and before him; Copernicus had preceded him, Kepler was beside him: but in physiology the waters had closed upon the path of Galen as upon the wake of a great ship; the anatomists, themselves galenists, had given Harvey little help; and the share of Servetus76, Colombo, and Fabricius was but small in the discovery of the central fact of the science, and of the method which opened the way to Pecquet and Aselli, to Glisson, to Steno, to Wharton and Willis, to Haller and Bernard. Harvey’s discovery was the first step to a transfiguration of medicine; and though after Harvey there arose much false physiology and therewith again great floods of medical sophistry, yet from his time medicine has had to reckon with physiology, the only source of scientific nosology and therapeutics.

We celebrate the memory of great men in the certain hope that in their children they will be born again.

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APPENDIX.

ASTROLOGY.

Besides those greater preventions which lay in the very structure and organised conceptions of society in the Middle Ages, the student of natural science was thwarted also by many lesser, which could not find place in this oration. Among the chief of these was judicial astrology, which supplanted and degraded the art of medicine.

It is difficult to carry the imagination into a time when the heavens were conceived as an animate and divine being77, the heavenly bodies as active and intelligent parts of it, and the whole set not in illimitable space but around man and his home, and waiting upon him (vid. p. 47); yet without such an effort we cannot realise the ancient place and dominion of astrology. Such a possession when in its strength must have enthralled the human mind; and it abode tenaciously with the first scientific conceptions of celestial phenomena, even in the thoughts of the enlightened. Tycho Brahe, for many years of his life, was an adept; and even Kepler saw 114portents in the skies. When we read the doctrines of Aristotle on the celestial beings, it is indeed somewhat strange that upon him, upon Plato, and upon the Ionians, the “judicia astrorum” had even less hold than the mythology: so truly poised, even in the infancy of science, were the cosmic speculations of this wonderful race. The Romans by their Etruscan tradition held to astrology, chiefly derived from Chaldea and Egypt, and by them it was mixed with grosser folk magic; yet even in Rome there were many to repudiate it, not only such Grecian spirits as Cicero but also such Romans as Juvenal; as in Harvey’s time it was assailed by the irony of Pascal and of La Fontaine. Even in the twelfth century John of Salisbury had not failed to turn his light artillery upon astrology.

This art of forecast naturally attached itself closely to that of medicine; and in its decrepitude still it clung to medicine like a parasite. And as parasites in the field of pathology, so astrology brought with it other noxious superstitions and follies even worse than itself. In England it survived till the witty attack of Swift killed Partridge and astrology together; yet to this day many of its notions are embedded in our common speech.

Ptolemy among his good services did one ill to mankind by his Tetrabiblon or “Quadripertit,” an astrological treatise which was current with the Almagest in the Western Schools. This authoritative treatise, together with the Aristotelian conception of the heavens, gave to astrology the aspect of a regular science with its own principles and methods; a science admired and115 even courted by princes. As Frederick the Second and Charles the Fifth would learn of the stars the moment to take the field against their foes, so the medieval physician sought their countenance in the letting of blood or in the exhibition of a clyster or emetic. The Church, abhorring all concurrent dominion, and justly abhorring this bondage of the judgment of God and of the will of man, almost alone withstood the astrologer. If the doctors of theology did not know how to deny the power of the stars in the material cosmos, they vehemently denied it in the world of the spirit. “Et ideo pro certo tenendum est,” says Aquinas, “grave peccatum esse circa ea quæ a voluntate hominis dependent judiciis astrorum uti.” Of the priestly assailants of astrology, the most attractive to us for his wit, sagacity and sound knowledge, was Nicholas Oresme, sometime Bishop of Lisieux (died 1382), translator of the Ethics and other Aristotelian treatises, as he is portrayed for us by Hauréau (Dict. des Sciences philosophiques, art. Oresme) and M. Charles Jourdain. The fun of the thing is that the outspoken Oresme was the counsellor, the friend, and even the tutor of that notable astrologer Charles the Fifth; a story as honourable to the prince as to the subject. As Charles issued from the chambers of his astrologers the discourses of Oresme must have made him a little uncomfortable, especially when Oresme records the misfortunes of astrologising captains, such as Alphonso king of Castille, of whom, says he, I have heard nothing notable except that he cast horoscopes, was unfortunate in war, and neglected116 his kingdom; or such again as James the king of Majorca, a passionate astrologer, who on the dictation of the stars made a sortie against Peter of Aragon, and never came back again. It is all very well, says Oresme, for kings to know somewhat of the noble science of astronomy, but they must be content to hear of it in talk with sages, and not to spend upon the stars time and care which they should devote to the interests of their people. “Mesmement tele chose” (astrology, necromancy, geomancy and “quelconques tels ars”) est plus périlleuse à personnes d’estat, comme sont princes et seigneurs ausquelz appartient le gouvernement publique. Et pour ce ay je composé ce livret en françois afin que gens lais le puissent entendre, desquels, si comme j’ay entendu, plusieurs sont trop enclins à telles fatuités. Et autres fois ay je escript en latin de ceste matière” etc. In spite of the Bishop of Lisieux, astrology at the end of the fourteenth century reached the summit of its influence and popularity. In the course of his argument Oresme gives an admirable account of the nature of hallucination and the parts it may play in perverting knowledge; not only so but he explains also the fallibility of the normal senses in respect of organic defects, of media, of false inference, of association, of imposition of the imagination, and so forth. Under such circumstances, he says, a mystic might conceive himself to have been visited by an angel!

FOOTNOTES:

CAMBRIDGE: PRINTED BY J. AND C. F. CLAY, AT THE UNIVERSITY PRESS.

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