William Harvey citáty

William Harvey byl anglický lékař, který je známý svým objevem krevního oběhu v lidském těle a rovněž tím, že odmítl teorii samoplození.

V roce 1603 si do svých poznámek poznamenal, že „krev bez přestání proudí a obíhá dokola, a to v důsledku tlukotu srdce“. Bylo to úžasné pozorování, které zcela odporovalo Galenovým představám. Proč Harvey čekal s uveřejněním poznatku pětadvacet let? Protože jeho teorie protiřečila Galenovi, musel si být naprosto jistý, že má pravdu. Celá léta trpělivě prováděl pokusy a pozorování. Pomocí stříkačky vstřikoval zvířatům do cév barviva. Později je pitval a studoval. Rozřezal jim srdce a studoval srdeční chlopně. Logickou úvahou vyvodil, že srdce čerpá krev, která obíhá v těle. Když konečně v roce 1628 publikoval své dílo Anatomické pojednání o pohybu srdce a krve, stal se terčem posměchu. Mnozí lékaři ho považovali za „potrhlého“ a jeho teorii za absurdní, nemožnou a škodlivou. Než však v roce 1657 zemřel, museli uznat, že měl pravdu. Byl také zakladatel embryologie. Wikipedia  

✵ 1. duben 1578 – 3. červen 1657   •   Další jména William Harwey
William Harvey foto
William Harvey: 9   citátů 0   lajků

William Harvey citáty a výroky

William Harvey: Citáty anglicky

“Very many maintain that all we know is still infinitely less than all that still remains unknown; nor do philosophers pin their faith to others' precepts in such wise that they lose their liberty, and cease to give credence to the conclusions of their proper senses. Neither do they swear such fealty to their mistress Antiquity that they openly, and in sight of all, deny and desert their friend Truth.”

"Dedication to Dr. Argent and Other Learned Physicians"; a portion of this statement is often quoted alone as simply "All we know is still infinitely less than all that still remains unknown.
De Motu Cordis et Sanguinis (1628)
Kontext: Very many maintain that all we know is still infinitely less than all that still remains unknown; nor do philosophers pin their faith to others' precepts in such wise that they lose their liberty, and cease to give credence to the conclusions of their proper senses. Neither do they swear such fealty to their mistress Antiquity that they openly, and in sight of all, deny and desert their friend Truth. But even as they see that the credulous and vain are disposed at the first blush to accept and believe everything that is proposed to them, so do they observe that the dull and unintellectual are indisposed to see what lies before their eyes, and even deny the light of the noon-day sun.

“Man comes into the world naked and unarmed, as if nature had destined him for a social creature, and ordained him to live under equitable laws and in peace”

De Generatione Animalium (1651)
Kontext: Man comes into the world naked and unarmed, as if nature had destined him for a social creature, and ordained him to live under equitable laws and in peace; as if she had desired that he should be guided by reason rather than be driven by force; therefore did she endow him with understanding, and furnish him with hands, that he might himself contrive what was necessary to his clothing and protection. To those animals to which nature has given vast strength, she has also presented weapons in harmony with their powers; to those that are not thus vigorous, she has given ingenuity, cunning, and singular dexterity in avoiding injury.

“I avow myself the partisan of truth alone.”

"Dedication to Dr. Argent and Other Learned Physicians"
De Motu Cordis et Sanguinis (1628)

Podobní autoři

Oliver Goldsmith foto
Oliver Goldsmith 10
irský lékař a spisovatel
John Locke foto
John Locke 20
anglický filozof a lékař
Samuel Johnson foto
Samuel Johnson 55
anglický spisovatel
Philippus Aureolus Theophrastu Paracelsus foto
Philippus Aureolus Theophrastu Paracelsus 10
švýcarský lékař a alchymista
Thomas Hobbes foto
Thomas Hobbes 40
anglický filozof
John Donne foto
John Donne 8
anglický básník
Thomas Fuller foto
Thomas Fuller 22
anglický kněz a historik
John Fletcher foto
John Fletcher 9
anglický jakobínský dramatik
Henry Fielding foto
Henry Fielding 14
anglický romanopisec a dramatik
Thomas More foto
Thomas More 20
anglický renesanční humanista