When, then, the universal opinion is present in us restraining us from tasting, and there is also the opinion that everything sweet is pleasant, and that this is sweet (now this is the opinion that is active), and when appetite happens to be present in us, the one opinion bids us avoid the object, but appetite leads us towards it (for it can move each of our bodily parts); so that it turns out that a man behaves incontinently under the influence (in a sense) of reason and opinion, and of opinion not contrary in itself, but only incidentally for the appetite is contrary not the opinion to right reason.