This saying alone is not confuted, but abideth sure: that a man must shun the doing of wrong more than the receiving, and study above all things not to seem, but to be, righteous in the doing of his own business and the business of the city; and that if any man be found evil in anything, he is to be corrected; and that the next good thing after being righteous is to become righteous through correction and just retribution; and that all flattery of himself and of other men, be they few or many, he must eschew; and that he must use Oratory and all other Instruments of Doing for the sake of Justice alway.
in "The Gorgias."