Moreover, the delights of learning something good and excellent, and of studying some of the means whereby a man knows how to regulate his body well and manage his household successfully, to be useful to his friends and city and to defeat his enemies — knowledge that yields not only very great benefits but very great pleasures — these are the delights of the self-controlled; but the incontinent have no part in them. For who, should we say, has less concern with these than he who has no power of cultivating them because all his serious purposes are centred in the pleasures that lie nearest?

Socrates, said Euthydemus, I think you mean that he who is at the mercy of the bodily pleasures has no concern whatever with virtue in any form.Yes, Euthydemus; for how can an incontinent man be any better than the dullest beast? How can he who fails to consider the things that matter most, and strives by every means to do the things that are most pleasant, be better than the stupidest of creatures? No, only the self-controlled have power to consider the things that matter most, and, sorting them out after their kind, by word and deed alike to prefer the good and reject the evil.