Thinking is the soul talking to itself.

Thinking and spoken discourse are the same thing, except that what we call thinking is, precisely, the inward dialogue carried on by the mind with itself without spoken sound.

...that in our state one man was to do one job, and the job he was naturally most suited for .. And further, we have often heard and often said that justice consists of minding your own business and not interfering with other people.

...that not life, but a good life, is to be chiefly valued.

A wise ignorance is an essential part of knowledge.

The purpose of education is to give to the body and to the soul all the beauty and all the perfection of which they are capable.

There's a victory and defeat-the first and best of victories, the lowest and worst of defeats-which each man gains or sustains at the hands not of another, but of himself.