All things are cause for either laughter or weeping.

Philosophy is the health of the mind.

You find in some a sort of graceless modesty, that makes them ashamed to requite an obligation.

Many discoveries are reserved for ages still to come . . . . Our universe is a sorry little affair unless it has in it something for every age to investigate.

There is nothing after death, and death itself is nothing.

A man can refrain from wanting what he has not and cheerfully make the best of a bird in the hand.

We learn not in the school, but in life.