Teenagers these days are out of control. They eat like pigs, they are disrespectful of adults, they interrupt and contradict their parents, and they terrorize their teachers.

The so-called Pythagoreans, who were the first to take up mathematics, not only advanced this subject, but saturated with it, they fancied that the principles of mathematics were the principles of all things.

Fate of empires depends on the education of youth

Property should be in a general sense common, but as a general rule private... In well-ordered states, although every man has his own property, some things he will place at the disposal of his friends, while of others he shares the use of them.

Metaphor is halfway between the unintelligible and the commonplace.

Those who believe that all virtue is to be found in their own party principles push matters to extremes; they do not consider that disproportion destroys a state.

So we must lay it down that the association which is a state exists not for the purpose of living together but for the sake of noble actions.