One thing a man must have: either a naturally light disposition or a disposition lightened by art and knowledge.

There is not enough religion in the world even to destroy religion.

What good is a book that does not even transport us beyond all books?

The most vulnerable and yet most unconquerable of things is human vanity; nay, through being wounded its strength increases and can grow to giant proportions.

Whatever harm the evil may do, the harm done by the good is the most harmful harm.

We do not place especial value on the possession of a virtue until we notice its total absence in our opponent.

Systems of morals are only a sign-language of the emotions.