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.

Honesty is for the most par less profitable than dishonesty.

Philosophy is the highest music.

Remember our words, then, and whatever is your aim let virtue be the condition of the attainment of your aim, and know that without this all possessions and pursuits are dishonourable and evil.

Not by force shall the children learn, but through play

For as there are misanthropists, or haters of men, there are also misologists, or haters of ideas, and both spring from the same cause, which is ignorance of the world.

Mankind will never see an end of trouble until lovers of wisdom come to hold political power, or the holders of power become lovers of wisdom