Thus rhetoric, it seems, is a producer of persuasion for belief, not for instruction in the matter of right and wrong ... And so the rhetorician's business is not to instruct a law court or a public meeting in matters of right and wrong, but only to make them believe.
Plato, Harold North Fowler, Walter Rangeley Maitland Lamb, Robert Gregg Bury (1953). “Plato”