We must now consider the difference of one moral virtue from another. And since those moral virtues which are about the passions, differ accordingly to the difference of passions, we must consider (1) the relation of virtue to passion; (2) the different kinds of moral virtue in relation to the passions. Under the first head there are five points of inquiry:
(1) Whether moral virtue is a passion?
(2) Whether there can be moral virtue with passion?
(3) Whether sorrow is compatible with moral virtue?
(4) Whether every moral virtue is about a passion?
(5) Whether there can be moral virtue without passion? ________________________
FIRST ARTICLE [I-II, Q. 59, Art. 1]
Whether Moral Virtue Is a Passion?
Objection 1: It would seem that moral virtue is a passion. Because the mean is of the same genus as the extremes. But moral virtue is a mean between two passions. Therefore moral virtue is a passion.
Obj. 2: Further, virtue and vice, being contrary to one another, are in the same genus. But some passions are reckoned to be vices, such as envy and anger. Therefore some passions are virtues.