I am an old man and have had many worries, but most have never come to pass.

It is the act of a madman to pursue impossibilities .

The noblest kind of retribution is not to become like your enemy.

Be tolerant with others and strict with yourself.

God sees the inner spirit stripped of flesh, skin, and all debris. For his own mind only touches the spirit that he has allowed to flow from himself into our bodies. And if you can act the same way, you will rid yourself of all suffering. For surely if you are not preoccupied with the body that encloses you, you will not trouble yourself about clothes, houses, fame, and other showy trappings.

To live happily is an inward power of the soul.

Persuade me or prove to me that I am mistaken in thought or deed, and I will gladly change - for it is the truth I seek, and the truth never harmed anyone. Harm comes from persisting in error and clinging to ignorance.