[54] I know that many persons will rail at this assertion as one which is dictated rather by self-conceit than by real wisdom. But if, after they have desisted from mocking and ridiculing it, they will condescend to investigate the matter and to examine clearly into what is really said, then, recognising and admiring its perfect truth, they will become aware that there is nothing for which a man will suffer more than for disregarding the words of a wise man.