For the concept of a circuit of the blood does not destroy, but rather advances traditional medicine.

The heart of animals is the foundation of their life, the sovereign of everything within them, the sun of their microcosm, that upon which all growth depends, from which all power proceeds.

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.

Civilization is only a series of victories against nature.

Very many maintain that all we know is still infinitely less than all that still remains unknown.

Nature is a volume of which God is the author.

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