"A horse is simply a horse."

"The human intellect at birth is like a tabula rasa, a pure potentiality that is actualized through education and comes to know."

"O what a lean cow! it is not fit to be killed: give it fodder until it gets fat."

"The physician must be a man of patience, for patience is the key to healing."

"The world is divided into men who have brains and no religion, and men who have religion and no brains."