William Harvey

"Seek not to confirm what you believe, but to discover what is true."

"In the repetition of nature's patterns lies the proof of her laws."

"Wisdom is knowing how much you do not yet understand."

"The pursuit of knowledge is the pursuit of immortality."

"What the ancients believed does not determine what is true."

"The body's architecture reveals the mind of the creator."

"In observing one creature, we observe the principles of all creatures."

"Failure properly understood is merely education in disguise."

"The heart's chambers hold secrets that centuries have only begun to unlock."

"Courage in thought precedes courage in action."

"Nature abhors neither mystery nor revelation."

"The investigator's greatest tool is not logic but persistent attention."

"Truth, once discovered, cannot be forgotten without willful blindness."

"The mind that refuses to question is not a mind at all."

"In the movement of blood lies the movement of the soul."

"What seems strange becomes familiar through understanding."

"The body's secrets are kept not by locks but by the limits of our inquiry."

"To advance, one must be willing to be thought foolish by the wise of yesterday."

"Nature's simplicity often conceals profound complexity."

"The heart does not argue; it simply fulfills its purpose."

"Understanding comes to those patient enough to watch and listen."

"The greatest teacher is the careful observation of how things actually work."

"In every heartbeat is a miracle repeated billions of times."

"The body is written in a language we are only beginning to read."

"To fear truth is to fear the ground upon which you stand."

"Nature requires not our belief but our attention."

"The curious mind is the free mind."

"Wisdom and humility are so intertwined they cannot be separated."

"What repeats must be understood; what is unique must be explained."

"The heart's constancy is nature's most profound lesson."