[496a]
Socrates
Take, for instance, any part of the body you like by itself, and consider it. A man, I suppose, may have a disease of the eyes, called ophthalmia?
Callicles
Certainly.
Socrates
Then I presume he is not sound also at that time in those same eyes?
Callicles
By no conceivable means.
Socrates
And what say you, when he gets rid of his ophthalmia? Does he at that time get rid too of the health of his eyes, and so at last is rid of both things together?
Callicles
Far from it.
Socrates
Because, I imagine, this would be an astonishing and irrational result, would it not?