It is not noble to return evil for evil, at no time ought we to do an injury to our neighbors.
PlatoThe 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.
Plato