Thus it is plain that incontinence in appetite is more disgraceful than incontinence in anger, and that continence and incontinence proper have to do with bodily appetites and pleasures.

But now let us see what differences we find in these bodily appetites and pleasures.

As we said at the outset, some of them are human and natural in kind and degree; others are signs of a brutal nature; others, again, are the result of organic injury or disease.

Now, it is with the first of these only that temperance and profligacy have to do: and for this reason we do not call beasts either temperate or profligate, except it be metaphorically, if we find a whole class of animals distinguished from others by peculiar lewdness and wantonness and voracity; for there is no purpose or deliberate calculation in what they do, but they are in an unnatural state, like madmen.