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

"The mind is like a mirror; it gathers dust while it rests."

"Time is a sword; if you do not cut it, it will cut you."

"The physician must be a man of wisdom, for wisdom is the foundation of medicine."

"Leeches should be kept a day before applying them. They should be squeezed to make them eject the contents of their stomachs."