The State which we have founded must possess the four cardinal virtues of wisdom, courage, discipline and justice ... Justice is the principle which has in fact been followed throughout, the principle of one man one job, of minding one s own business , in the sense of doing the job for which one is naturally fitted and not interfering with other people.
PlatoThe soul takes nothing with her to the other world but her education and culture; and these, it is said, are of the greatest service or of the greatest injury to the dead man, at the very beginning of his journey hither.
PlatoTrue opinions are a fine thing and do all sorts of good so long as they stay in their place; but they will not stay long. They run away from a man's mind, so they are not worth much until you tether them by working out the reason. Once they are tied down, they become knowledge, and are stable.
PlatoSo the state founded on natural principles is wise as a whole in virtue of the knowledge inherent in its smallest constituent class, which exercises authority over the rest. And the smallest class is the one which naturally possesses that form of knowledge which alone of all others deserves the title of wisdom.
Plato