"The causes of diseases are often hidden, and to find them requires much labor and diligence."

"I have seen the testicles of a hanged man twitch for a full hour after death, as if they still longed for life."

"As art is a habit with reference to things to be done, so is science a habit in respect to things to be known."

"The heart is the beginning of life, the first to live, and the last to die."

"All we know is still infinitely less than all that still remains unknown."