As to anger, we shall have to examine its nature, what power of the soul it constitutes, whether it be anger that imparts to the heart a trace of its own power; if there exist another force capable of producing the movement revealed in the animal; and finally, if it be not a trace of anger, but anger itself which resides in the heart. ANGER ORIGINATES IN THE VEGETATIVE AND GENERATIVE POWER, AS TRACE OF THE SOUL. First, what is the nature of anger? We grow irritated at maltreatment of ourselves or of a person dear to us; in general, when we witness some outrage. Therefore anger implies a certain degree of sensation, or even intelligence, and we should have to suppose that anger originates in some principle other than the vegetative power. Certain bodily conditions, however, predispose us to anger; such as being of a fiery disposition, and being bilious; for people are far less disposed to anger if of a cold-blooded nature. Besides, animals grow irritated especially by the excitement of this particular part, and by threats of harm to their bodily condition. Consequently we would once more be led to refer anger to the condition of the body and to the principle which presides over the constitution of organism. Since men are more irritable when sick than when well, when they are hungry, more than when well satisfied, anger or its principle should evidently be referred to the organized and living body; evidently, attacks of anger are excited by the blood or the bile, which are living parts of the animal. As soon as the body suffers, the blood as well as the bile boils, and there arises a sensation which arouses the imagination; the latter then instructs the soul of the state of the organism, and disposes the soul to attack what causes this suffering. On the other hand, when the reasonable soul judges that we have been injured, she grows excited, even if there were no disposition to anger in the body. This affection seems therefore to have been given to us by nature to make us, according to the dictates of our reasons, repel and threatens us. (There are then two possible states of affairs.) Either the irascible power first is moved in us without the aid of reason, and later communicates its disposition to reason by means of the imagination; or, reason first enters into action, and then reason communicates its impulse to that part of our being which is disposed to anger. In either case, anger arises in the vegetative and generative power, which, in organizing the body, has rendered it capable to seek out what is agreeable, and to avoid what is painful; diffusing the bitter bile through the organism, imparting to it a trace of the soul, thus communicating to it the faculty of growing irritated in the presence of harmful objects, and, after having been harmed, of harming other things, and to render them similar to itself. Anger is a trace of the soul, of the same nature as the soul's faculty of desire, because