Plato on Intellectual

“Each of these private teachers who work for pay … inculcates nothing else than these opinions of the multitude which they opine when they are assembled and calls this knowledge wisdom.”

“Knowledge is the food of the soul; and we must take care, my friend, that the Sophist does not deceive us when he praises what he sells, like the dealers wholesale or retail who sell the food of the body; for they praise indiscriminately all their goods, without knowing what are really beneficial or hurtful.”