"Is it the fault of wine if a fool drinks it and goes stumbling into darkness?"

"The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes."

"The human intellect is incapable of knowing the divine essence."

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

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