On the contrary, The Philosopher says (Ethic. iii, 8) that "fortitude is chiefly about sudden dangers of death."
I answer that, Two things must be considered in the operation of fortitude. One is in regard to its choice: and thus fortitude is not about sudden occurrences: because the brave man chooses to think beforehand of the dangers that may arise, in order to be able to withstand them, or to bear them more easily: since according to Gregory (Hom. xxv in Evang.), "the blow that is foreseen strikes with less force, and we are able more easily to bear earthly wrongs, if we are forearmed with the shield of foreknowledge." The other thing to be considered in the operation of fortitude regards the display of the virtuous habit: and in this way fortitude is chiefly about sudden occurrences, because according to the Philosopher (Ethic. iii, 8) the habit of fortitude is displayed chiefly in sudden dangers: since a habit works by way of nature. Wherefore if a person without forethought does that which pertains to virtue, when necessity urges on account of some sudden danger, this is a very strong proof that habitual fortitude is firmly seated in his mind.
Yet is it possible for a person even without the habit of fortitude, to prepare his mind against danger by long forethought: in the same way as a brave man prepares himself when necessary. This suffices for the Replies to the Objections. _______________________
TENTH ARTICLE [II-II, Q. 123, Art. 10]
Whether the Brave Man Makes Use of Anger in His Action?
Objection 1: It seems that the brave man does not use anger in his action. For no one should employ as an instrument of his action that which he cannot use at will. Now man cannot use anger at will, so as to take it up and lay it aside when he will. For, as the Philosopher says (De Memoria ii), when a bodily passion is in movement, it does not rest at once just as one wishes. Therefore a brave man should not employ anger for his action.
Obj. 2: Further, if a man is competent to do a thing by himself, he should not seek the assistance of something weaker and more imperfect. Now the reason is competent to achieve by itself deeds of fortitude, wherein anger is impotent: wherefore Seneca says (De Ira i): "Reason by itself suffices not only to make us prepared for action but also to accomplish it. In fact is there greater folly than for reason to seek help from anger? the steadfast from the unstaid, the trusty from the untrustworthy, the healthy from the sick?" Therefore a brave man should not make use of anger.
Obj. 3: Further, just as people are more earnest in doing deeds of fortitude on account of anger, so are they on account of sorrow or desire; wherefore the Philosopher says (Ethic. iii, 8) that wild beasts are incited to face danger through sorrow or pain, and adulterous persons dare many things for the sake of desire. Now fortitude employs neither sorrow nor desire for its action. Therefore in like manner it should not employ anger.
On the contrary, The Philosopher says (Ethic. iii, 8) that "anger helps the brave."
I answer that, As stated above (I-II, Q. 24, A. 2), concerning anger and the other passions there was a difference of opinion between the Peripatetics and the Stoics. For the Stoics excluded anger and all other passions of the soul from the mind of a wise or good man: whereas the Peripatetics, of whom Aristotle was the chief, ascribed to virtuous men both anger and the other passions of the soul albeit modified by reason. And possibly they differed not in reality but in their way of speaking. For the Peripatetics, as stated above (I-II, Q. 24, A. 2), gave the name of passions to all the movements of the sensitive appetite, however they may comport themselves. And since the sensitive appetite is moved by the command of reason, so that it may cooperate by rendering action more prompt, they held that virtuous persons should employ both anger and the other passions of the soul, modified according to the dictate of reason. On the other hand, the Stoics gave the name of passions to certain immoderate emotions of the sensitive appetite, wherefore they called them sicknesses or diseases, and for this reason severed them altogether from virtue.