William Harvey

"All truth is discovered, not invented."

"The mind must be willing to change."

"Nature rewards those who observe with humility."

"The body's harmony reflects the harmony of nature."

"To question is to live; to accept blindly is to sleep."

"The heart is the seat of all human power."

"Nature's perfection is the standard of all knowledge."

"The heart is the beginning of life, the sun of the microcosm, just as the sun in his turn might well be called the heart of the world."

"Nature itself is the best physician."

"I profess both to learn and to teach anatomy, not from books alone as most anatomists have hitherto done, but from dissections, and from actual inspection of the body itself."

"The heart beats not from the brain's command but from its own inherent nature."

"To find the truth, we must examine the body with our own eyes, not merely trust the words of ancients."

"Motion and the circle of life depend upon the heart's perpetual action."

"What nature does slowly, art cannot speed; what nature withholds, art cannot supply."

"The great anatomist must be also a great observer of the living."

"Blood circulates not in the vessels like water in pipes, but lives and moves with purpose."

"All life flows from the heart; the heart is the seat of life itself."

"To understand the body is to understand the workings of creation."

"Custom and authority have blinded us to what nature plainly shows."

"The eye that sees with prejudice sees nothing truly."

"In the heart beats the rhythm of existence itself."

"Nature is the truest teacher; observation is the truest method."

"What appears impossible to the mind bound by tradition may become clear to the unshackled observer."

"The heart's motion sustains the entire body; so too does passion sustain the soul."

"Each discovery in nature opens a thousand new questions."

"To dissect is to learn the grammar of life."

"Galen was great, but nature is greater still."

"The pulse tells the story that words cannot speak."

"Where anatomists see only mechanism, philosophers may see purpose."

"The heart does not rest; therefore, neither should the seeker of truth."