Diogenes would frequently praise those who were about to marry, and yet did not marry.

Diogenes, when asked from what country he came, replied, "I am a citizen of the world."

Fortune is unstable, while our will is free.

Aristippus being asked what were the most necessary things for well-born boys to learn, said, "Those things which they will put in practice when they become men.

Heraclitus says that Pittacus, when he had got Alcæus into his power, released him, saying, "Forgiveness is better than revenge.

Anarcharsis, on learning that the sides of a ship were four fingers thick, said that "the passengers were just that distance from death.

There is a written and an unwritten law. The one by which we regulate our constitutions in our cities is the written law; that which arises from customs is the unwritten law.