The body is most fully developed from thirty to thirty-five years of age, the mind at about forty-nine.

In making a speech one must study three points: first, the means of producing persuasion; second, the language; third the proper arrangement of the various parts of the speech.

Man's best friend is one who wishes well to the object of his wish for his sake, even if no one is to know of it.

Boundaries don't protect rivers, people do.

... the friendship of worthless people has a bad effect (because they take part, unstable as they are, in worthless pursuits, and actually become bad through each other's influence). But the friendship of the good is good, and increases in goodness because of their association. They seem even to become better men by exercising their friendship and improving each other; for the traits that they admire in each other get transferred to themselves.

The virtue of the good man is necessarily the same as the virtue of the citizen of the perfect state.

Greed has no boundaries