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.
PlatoYou ought not attempt to cure the eyes without the head, or the head without the body, so neither ought you attempt to cure the body without the soul.
PlatoThe cause of all the blunders committed by man arises from this excessive self-love. For the lover is blinded by the object loved; so that he passes a wrong judgment on what is just, good and beautiful, thinking that he ought always to honor what belongs to himself in preference to truth. For he who intends to be a great man ought to love neither himself nor his own things, but only what is just, whether it happens to be done by himself, or by another.
Plato