To those, again, who [in order to show that pleasure is not good] adduce the disgraceful kinds of pleasure we might reply that these things are not pleasant. Though they be pleasant to ill-conditioned persons, we must not therefore hold them to be pleasant except to them; just as we do not hold that to be wholesome, or sweet, or bitter, which is wholesome, sweet, or bitter to the sick man, or that to be white which appears white to a man with ophthalmia.

Or, again, we might reply that these pleasures are desirable, but not when derived from these sources, just as it is desirable to be rich, but not at the cost of treachery, and desirable to be in health, but not at the cost of eating any kind of abominable food.

Or we might say that the pleasures are specifically different. The pleasures derived from noble sources are different from those derived from base sources, and it is impossible to feel the just man’s pleasure without being just, or the musical man’s pleasure without being musical, and so on with the rest.