27 Quotes by William Harvey

There is no perfect knowledge which can be entitled ours, that is innate; none but what has been obtained from experience, or derived in some way from our senses.

It is, however, an argument of no weight to say that natural bodies are first generated or compounded out of those things into which they are at the last broken down or dissolved.

I appeal to your own eyes as my witness and judge.

Harvey sought for truth in Truth's own book- Creation - which by God himself was writ;And wisely thought 'twas fitNot to read comments only upon it,But on th' original itself to look.Methinks in Art's great circle others standLock'd up together hand in hand:Every one leads as he is led,The same bare path they tread,A dance like that of Fairies, a fantastic round,With neither change of motion nor of ground.Had Harvey to this road confined his wit,His noble circle of the blood had been untrodden yet.

Harvey was not content merely to gather knowledge; he digested and arranged it under the guidance of the faculties which compare and reason. ... Harvey appears to have possessed, in a remarkable degree, the power of persuading and conciliating those with whom he came in contact. In the whole course of his long life we hear nothing either of personal enemies or personal enmities ... one of the great men whom God, in virtue of his eternal laws, bids to appear on earth from time to time to enlighten, and to ennoble mankind.

Memory cannot exist without endurance of the things perceived, and the thing perceived cannot remain where it has never been.

Nature is nowhere accustomed more openly to display her secret mysteries than in cases where she shows tracings of her workings apart from the beaten paths; nor is there any better way to advance the proper practice of medicine than to give our minds to the discovery of the usual law of nature, by careful investigation of cases of rarer forms of disease.

The animal's heart is the basis of its life, its chief member, the sun of its microcosm; on the heart all its activity depends, from the heart all its liveliness and strength arise. Equally is the king the basis of his kingdoms, the sun of his microcosm, the heart of the state; from him all power arises and all grace stems.

When in many dissections, carried out as opportunity offered upon living animals, I first addressed my mind to seeing how I could discover the function and offices of the heart's movement in animals through the use of my own eyes instead of through the books and writings of others, I kept finding the matter so truly hard and beset with difficulties that I all but thought, with Fracastoro, that the heart's movement had been understood by God alone.