The Great Events by Famous Historians [Volumes 1-14]

There is another curious point of resemblance in the fact that even those who gave Harvey their general approbation and support sometimes failed to apprehend the value of some of those parts of his doctrine which are, indeed, merely auxiliary to the theory of the circulation, but are only a little less important than it. Harvey's great friend and champion, Sir George Ent, is in this case; and I am sorry to be obliged to admit that Descartes falls under the same reprehension.

This great philosopher, mathematician, and physiologist, whose conception of the phenomena of life as the results of mechanism is now playing as great a part in physiological science as Harvey's own discovery, never fails to speak with admiration, as Harvey gratefully acknowledges, of the new theory of the circulation. And it is astonishing—I had almost said humiliating—to find that even he is unable to grasp Harvey's profoundly true view of the nature of the systole and the diastole, or to see the force of the quantitative argument. He adduces experimental evidence against the former position, and is even further from the truth than Galen was, in his ideas of the physical cause of the circulation.

Yet one more parallel with Darwin. In spite of all opposition, the doctrine of the circulation propounded by Harvey was, in its essential features, universally adopted within thirty years of the time of its publication. Harvey's friend, Thomas Hobbes, remarked that he was the only man, in his experience, who had the good-fortune to live long enough to see a new doctrine accepted by the world at large.

It is, I believe, a cherished belief of Englishmen that Francis Bacon, Viscount St. Albans and sometime lord chancellor of England, invented that "inductive philosophy" of which they speak with almost as much respect as they do of church and state; and that, if it had not been for this "Baconian induction," science would never have extricated itself from the miserable condition in which it was left by a set of hair-splitting folk known as the ancient Greek philosophers. To be accused of departing from the canons of the Baconian philosophy is almost as bad as to be charged with forgetting your aspirates; it is understood as a polite way of saying that you are an entirely absurd speculator.

Now the Novum Organon was published in 1620, while Harvey began to teach the doctrine of the circulation, in his public lectures, in 1619. Acquaintance with the Baconian induction, therefore, could not have had much to do with Harvey's investigations. The Exercitatio, however, was not published till 1628. Do we find in it any trace of the influence of the Novum Organon? Absolutely none. So far from indulging in the short-sighted and profoundly unscientific depreciation of the ancients in which Bacon indulges, Harvey invariably speaks of them with that respect which the faithful and intelligent study of the fragments of their labors that remain to us must inspire in everyone who is practically acquainted with the difficulties with which they had to contend, and which they so often mastered. And, as to method, Harvey's method is the method of Galen, the method of Realdus Columbus, the method of Galileo, the method of every genuine worker in science either in the past or the present. On the other hand, judged strictly by the standard of his own time, Bacon's ignorance of the progress which science had up to that time made is only to be equalled by his insolence toward men in comparison with whom he was the merest sciolist. Even when he had some hearsay knowledge of what has been done, his want of acquaintance with the facts and his abnormal deficiency in what I may call the scientific sense, prevent him from divining its importance. Bacon could see nothing remarkable in the chief contributions to science of Copernicus or of Kepler or of Galileo; Gilbert, his fellow-countryman, is the subject of a sneer; while Galen is bespattered with a shower of impertinences, which reach their climax in the epithets "puppy" and "plague."