If a man is always disposed to do _wrong_ whenever the opportunity presents itself, and there is no external power to restrain him, we call him _bad_. According to our doctrine of wrong, this means that such a man does not merely assert the will to live as it appears in his own body, but in this assertion goes so far that he denies the will which appears in other individuals. This is shown by the fact that he desires their powers for the service of his own will, and seeks to destroy their existence when they stand in the way of its efforts. The ultimate source of this is a high degree of egoism, the nature of which has been already explained. Two things are here apparent. In the first place, that in such a man an excessively vehement will to live expresses itself, extending far beyond the assertion of his own body; and, in the second place, that his knowledge, entirely given up to the principle of sufficient reason and involved in the _principium individuationis_, cannot get beyond the difference which this latter principle establishes between his own person and every one else. Therefore he seeks his own well-being alone, completely indifferent to that of all others, whose existence is to him altogether foreign and divided from his own by a wide gulf, and who are indeed regarded by him as mere masks with no reality behind them. And these two qualities are the constituent elements of the bad character. This great intensity of will is in itself and directly a constant source of suffering. In the first place, because all volition as such arises from want; that is, suffering. (Therefore, as will be remembered, from the Third Book, the momentary cessation of all volition, which takes place whenever we give ourselves up to æsthetic contemplation, as pure will-less subject of knowledge, the correlative of the Idea, is one of the principal elements in our pleasure in the beautiful.) Secondly, because, through the causal connection of things, most of our desires must remain unfulfilled, and the will is oftener crossed than satisfied, and therefore much intense volition carries with it much intense suffering. For all suffering is simply unfulfilled and crossed volition; and even the pain of the body when it is injured or destroyed is as such only possible through the fact that the body is nothing but the will itself become object. Now on this account, because much intense suffering is inseparable from much intense volition, very bad men bear the stamp of inward suffering in the very expression of the countenance; even when they have attained every external happiness, they always look unhappy so long as they are not transported by some momentary ecstasy and are not dissembling. From this inward torment, which is absolutely and directly essential to them, there finally proceeds that delight in the suffering of others which does not spring from mere egoism, but is disinterested, and which constitutes _wickedness_ proper, rising to the pitch of _cruelty_.