William Harvey — "I profess to learn and to teach anatomy not from books but from dissections."
I profess to learn and to teach anatomy not from books but from dissections.
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More from William Harvey
"It is a thing worthy of observation how much more easily and quickly the mind is deceived than the eye."
"The blood is the very bond of the soul, and the soul itself."
"It is not by words, but by facts and arguments, that we must seek for truth."
"The motion of the blood is in a circle, and is in truth perpetual."
"I have been accused by some of daring to depart from the opinions of the ancients."
About William Harvey (1578-1657)
English physician whose On the Motion of the Heart and Blood in Animals (1628) demonstrated blood circulation, overturning 1,400 years of Galenic medicine. Closely associated with Francis Bacon (his contemporary in the new English empiricism). For an intellectual contrast, see Galenic medicine, the 2nd-century Greek medical tradition (humors, blood-as-consumed-fuel) — Harvey calculated that the heart pumps more blood per hour than the body could possibly produce as fuel — a single quantitative observation that demolished the entire Galenic-Aristotelian medical worldview. The cleanest example in medical history of arithmetic disproving 14 centuries of authority.
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Understanding this quote
What it means
Harvey declares that genuine anatomical knowledge comes from hands-on examination of actual bodies, not from reading classical authorities. True understanding requires direct observation and experiment rather than accepting inherited wisdom from texts. He is staking a claim for empirical evidence over scholastic tradition as the foundation of medical knowledge.
Relevance to William Harvey
Harvey built his reputation by meticulously dissecting animals and human cadavers, ultimately discovering pulmonary and systemic blood circulation. His 1628 work Exercitatio Anatomica de Motu Cordis overturned Galenic medicine through observation alone. This quote captures his lifelong empirical commitment and willingness to contradict accepted authorities using physical evidence.
The era
In early modern Europe, universities still taught medicine largely from Galen and Aristotle, texts over a thousand years old. The Scientific Revolution was challenging this deference to ancient authority. Harvey worked during a pivotal transition when figures like Vesalius had begun exposing anatomical errors in classical texts, making direct dissection both revolutionary and professionally risky.
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