'And do you not pursue after pleasure as a good, and avoid pain as an
evil?'
He assented.
'Then you think that pain is an evil and pleasure is a good: and even
pleasure you deem an evil, when it robs you of greater pleasures than it
gives, or causes pains greater than the pleasure. If, however, you call
pleasure an evil in relation to some other end or standard, you will be
able to show us that standard. But you have none to show.'