"Man is neither angel nor beast, and the misfortune is that he who would act the angel acts the beast."

"The more I learn, the more I realize how much I don't know."

"It is not by the force of reason that we have adopted religion, but by the force of habit."

"It is a dangerous thing to make a man believe he is no better than the beasts, for he will soon begin to act as such."

"The greatest pleasure is to vanquish the desire to possess."