Intemperance (n.) is incurable because the self-indulgent man cannot repent — and a man who cannot repent cannot be cured.
Intemperance (n.) is Aristotle's great puzzle: if good action conforms to right reason, how can a subject's impulses still draw him elsewhere?
Intemperance (n.) belongs to the one who pursues excess with little or no appetite — for what would he do if he had a vigorous one?
Intemperance (n.) leaves the self-indulgent man pained even by his pleasures — pained when he lacks them and pained while craving them, absurdly suffering for the sake of pleasure.
Intemperance (n.) is worse than incontinence because the vice has reached the ruling principle: the incontinent man's reason still fights him; the intemperate man's reason consents.