Nicomachean Ethics

As there are some things naturally pleasant, and of these two kinds; those, namely, which are pleasant generally, and those which are so relatively to particular kinds of animals and men; so there are others which are not naturally pleasant but which come to be so in consequence either of maimings, or custom, or depraved natural tastes: and one may observe moral states similar to those we have been speaking of, having respectively these classes of things for their object-matter.

I mean the Brutish, as in the case of the female who, they say, would rip up women with child and eat the foetus; or the tastes which are found among the savage tribes bordering on the Pontus, some liking raw flesh, and some being cannibals, and some lending one another their children to make feasts of; or what is said of Phalaris. These are instances of Brutish states, caused in some by disease or madness; take, for instance, the man who sacrificed and ate his mother, or him who devoured the liver of his fellow-servant. Instances again of those caused by disease or by custom, would be, plucking out of hair, or eating one’s nails, or eating coals and earth.[13] Now wherever nature is really the cause no one would think of calling men of Imperfect Self-Control, ... nor, in like manner, such as are in a diseased state through custom.

The having any of these inclinations is something foreign to what is denominated Vice, just as Brutishness is: and when a man has them his mastering them is not properly Self-Control, nor his being mastered by them Imperfection of Self-Control in the proper sense, but only in the way of resemblance; just as we may say a man of ungovernable wrath fails of Self-Control in respect of anger but not simply fails of Self-Control. For all excessive folly, cowardice, absence of Self-Control, or irritability, are either Brutish or morbid. The man, for instance, who is naturally afraid of all things, even if a mouse should stir, is cowardly after a Brutish sort; there was a man again who, by reason of disease, was afraid of a cat: and of the fools, they who are naturally destitute of Reason and live only by Sense are Brutish, as are some tribes of the far-off barbarians, while others who are so by reason of diseases, epileptic or frantic, are in morbid states.

So then, of these inclinations, a man may sometimes merely have one without yielding to it: I mean, suppose that Phalaris had restrained his unnatural desire to eat a child: or he may both have and yield to it. As then Vice when such as belongs to human nature is called Vice simply, while the other is so called with the addition of “brutish” or “morbid,” but not simply Vice, so manifestly there is Brutish and Morbid Imperfection of Self-Control, but that alone is entitled to the name without any qualification which is of the nature of utter absence of Self-Control, as it is found in Man.