Xenophanes speaks thus:-And no man knows distinctly anything,And no man ever will.

Arcesilaus had a peculiar habit while conversing of using the expression, "My opinion is," and "So and so will not agree to this.

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

Bias used to say that men ought to calculate life both as if they were fated to live a long and a short time, and that they ought to love one another as if at a future time they would come to hate one another; for that most men were bad.

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

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.

Plato was continually saying to Xenocrates, "Sacrifice to the Graces.