True knowledge exists in knowing that you know nothing.

Beware the barrenness of a busy life.

Not life, but good life, is to be chiefly valued.

True wisdom comes to each of us when we realize how little we understand about life, ourselves, and the world around us.

The unexamined life is not worth living.

The end of life is to be like God, and the soul following God will be like Him.

By all means, marry. If you get a good wife, you'll become happy if you get a bad one, you'll become a philosopher.

As to marriage or celibacy, let a man take which course he will, he will be sure to repent.

All men's souls are immortal, but the souls of the righteous are immortal and divine.

Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for.