And what shall he suffer who slays him who of all men, as they say, is his own best friend? I mean the suicide, who deprives himself by violence of his appointed share of life. Not because the law of the state requires him. Nor yet under the compulsion of some painful and inevitable misfortune which has come upon him. Nor because he has had to suffer from irremediable and intolerable shame, but who from sloth or want of manliness imposes upon himself an unjust penalty.

The good man is the only excellent musician, because he gives forth a perfect harmony not with a lyre or other instrument but with the whole of his life.

Is there anything worse for a state than to be split and disunited? or anything better than cohesion and unity?

States are as the men, they grow out of human characters.

Courage is a kind of salvation.

A work well begun is half-ended.

I can show you that the art of calculation has to do with odd and even numbers in their numerical relations to themselves and to each other.