William Harvey

"Blood moves in circles, as all life moves in circles."

"To question the ancients is not to be irreverent, but to be honest."

"The body is a book written in a language older than words."

"Motion is the evidence of life; stillness is the evidence of death."

"In my younger years, I too believed what I was taught; then I learned to see."

"The arteries carry life itself through their endless journeys."

"What the mind believes, the eye may refuse to see; what the eye sees, the mind must accept."

"Dissection reveals not the machine, but the miracle."

"Nature keeps her secrets only from the incurious."

"The heart's constant labor is a reminder of our debt to the body."

"To understand circulation is to understand the economy of life."

"Every vein carries a story of transformation."

"The authority of nature supersedes all other authorities."

"Fear of being wrong keeps men from discovering what is right."

"In the laboratory, imagination must wed observation."

"The human body is a kingdom, and the heart is its sovereign."

"What I have written about the heart, I have written with my own hands, having seen it myself."

"To be a true anatomist is to be humble before nature."

"The circulation of blood is proof that all things in nature are connected."

"Superstition dies when observation is born."

"The heart is not merely a muscle; it is the seat of wonder."

"In medicine as in life, habit often masquerades as truth."

"To admit error is the beginning of wisdom; to embrace it is the path of progress."

"Nature's laws are written not in books, but in bodies."

"The pulse is the echo of the heart's eternal song."

"What Galen said, I tested; what experience teaches, I believe."

"The heart performs its duty without rest or complaint; perhaps we should emulate it."

"To understand the flow of blood is to understand the flow of time itself."

"Authority without evidence is merely tyranny dressed in robes."

"Every dissection is a conversation with nature."