"Pleasure is indeed a proper criterion in the arts, but not the pleasure experienced by anybody and everybody. The productions of the Muse are at their finest when they delight men of high calibre and adequate education—but particularly if they succeed in pleasing the single individual whose education and moral standards reach heights attained by no one else. This is the reason why we maintain that judges in these matters need high moral standards: they have to possess not only a discerning taste, but courage too. A judge won’t be doing his job properly if he reaches his verdict by listening to the audience and lets himself be thrown off balance by the yelling of the mob and his own lack of training; nor must he shrug his shoulders and let cowardice and indolence persuade him into a false verdict against his better judgment, so that he lies with the very lips with which he called upon the gods when he undertook office. The truth is that he sits in judgment as a teacher of the audience, rather than as its pupil; his function is to throw his weight against them, if pleasure they show has been aroused improperly and illegitimately."
Trevor J. Saunders, trans., “Laws,” in Plato: Complete Works, ed. John M. Cooper (Indianapolis: Hackett Publishing Company, Inc., 1997), pg. 1350, 658e-659b.