William Harvey

"Experiment is the interrogation of nature."

"The heart's work is the work of all life."

"In dissection, truth emerges from darkness."

"Progress demands we forsake comfortable falsehoods."

"The physician must be a natural philosopher first."

"What moves the blood moves the world forward."

"Nature abhors stagnation as it abhors a vacuum."

"The evidence of the senses, properly used, is our truest guide."

"To cure disease, we must first cure ignorance."

"In the circulation of blood, we see the circulation of truth."

"Tradition without verification is merely elaborate superstition."

"The human body is a kingdom of infinite wonder."

"Motion is the very signature of life."

"We see only what we have trained ourselves to see."

"Authority that forbids investigation is the enemy of progress."

"Every heartbeat is a victory against entropy."

"The structure of things reveals their purpose."

"In anatomy, we read the autobiography of God."

"Doubt is not the enemy of knowledge, but its servant."

"The vein and artery are democracy in motion—each with its role."

"Understanding requires both humility and courage."

"Nature is a greater teacher than any university."

"To assert without proof is to lie politely."

"The body's circulation is the heart's purpose made visible."

"We inherit the questions of our ancestors; we must find our own answers."

"In studying the particular, we glimpse the universal."

"Health is the harmony of motion within the body."

"Fear of challenging convention dies when truth speaks."

"The physician who never changes his mind has never truly thought."

"Motion gives meaning; stasis gives only despair."