If you are willing to reflect on the courage and moderation of other people, you will find them strange.

[M]ere knowledge of the truth will not give you the art of persuasion.

Music is a more potent instrument than any other for education.

Let no one destitute of geometry enter my doors.

Our need will be the real creator.

Madness, provided it comes as the gift of heaven, is the channel by which we receive the greatest blessings... the men of old who gave things their names saw no disgrace or reproach in madness; otherwise they would not have connected it with the name of the noblest of arts, the art of discerning the future, and called it the manic art... So, according to the evidence provided by our ancestors, madness is a nobler thing than sober sense... madness comes from God, whereas sober sense is merely human.

Their military training will ensure success in war, but they must maintain unity by not allowing the state to grow to large, and by ensuring that the measures for promotion and demotion from one class to another are carried out. Above all they must maintain the educational system unchanged; for on education everything else depends, and it is an illusion to imagine that mere legislation without it can effect anything of consequence.