Nature does nothing in vain.
Blood circulation
Attributed, a common philosophical principle he applied to biology.
c. 1628
Found in 1 providers: grok
Cross Reference
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"The human body is a machine, but it is also a living soul."
Strange & Unusual"What remains to be said is of so novel and unheard of a character that I not only fear injury to myself from the envy of a few, but I tremble lest I have mankind at large for my enemies, so much to wo…"
Shocking"The pulse is nothing more than the impulsion of the blood into the arteries."
Strange & Unusual"The world is a living creature."
Strange & Unusual"Truth is the daughter of time, not of authority."
Philosophical