Of Good and Evil in the Passions of the Soul

Of Good and Evil in the Passions of the Soul — St. Thomas Aquinas asks: Whether moral good and evil can be found in the passions of the soul?; Whether every passion of the soul is evil morally?; Whether passion increases or decreases the goodness or malice of an act?; Whether any passion is good or evil in its species?.

We must now consider good and evil in the passions of the soul: and under this head there are four points of inquiry:

Article 1: Whether moral good and evil can be found in the passions of the soul?

Augustine says (De Civ. Dei xiv, 7) while speaking of the passions of the soul: "They are evil if our love is evil; good if our love is good."

We may consider the passions of the soul in two ways: first, in themselves; secondly, as being subject to the command of the reason and will. If then the passions be considered in themselves, to wit, as movements of the irrational appetite, thus there is no moral good or evil in them, since this depends on the reason, as stated above (). If, however, they be considered as subject to the command of the reason and will, then moral good and evil are in them. Because the sensitive appetite is nearer than the outward members to the reason and will; and yet the movements and actions of the outward members are morally good or evil, inasmuch as they are voluntary. Much more, therefore, may the passions, in so far as they are voluntary, be called morally good or evil. And they are said to be voluntary, either from being commanded by the will, or from not being checked by the will.

Article 2: Whether every passion of the soul is evil morally?

Augustine says (De Civ. Dei xiv, 9) that "all these emotions are right in those whose love is rightly placed . . . For they fear to sin, they desire to persevere; they grieve for sin, they rejoice in good works."

On this question the opinion of the Stoics differed from that of the Peripatetics: for the Stoics held that all passions are evil, while the Peripatetics maintained that moderate passions are good. This difference, although it appears great in words, is nevertheless, in reality, none at all, or but little, if we consider the intent of either school. For the Stoics did not discern between sense and intellect; and consequently neither between the intellectual and sensitive appetite. Hence they did not discriminate the passions of the soul from the movements of the will, in so far as the passions of the soul are in the sensitive appetite, while the simple movements of the will are in the intellectual appetite: but every rational movement of the appetitive part they call will, while they called passion, a movement that exceeds the limits of reason. Wherefore Cicero, following their opinion (De Tusc. Quaest. iii, 4) calls all passions "diseases of the soul": whence he argues that "those who are diseased are unsound; and those who are unsound are wanting in sense." Hence we speak of those who are wanting in sense of being "unsound."

On the other hand, the Peripatetics give the name of "passions" to all the movements of the sensitive appetite. Wherefore they esteem them good, when they are controlled by reason; and evil when they are not controlled by reason. Hence it is evident that Cicero was wrong in disapproving (De Tusc. Quaest. iii, 4) of the Peripatetic theory of a mean in the passions, when he says that "every evil, though moderate, should be shunned; for, just as a body, though it be moderately ailing, is not sound; so, this mean in the diseases or passions of the soul, is not sound." For passions are not called "diseases" or "disturbances" of the soul, save when they are not controlled by reason.

Hence the reply to the First Objection is evident.

Article 3: Whether passion increases or decreases the goodness or malice of an act?

Augustine says (De Civ. Dei ix, 5) that "the passion of pity is obedient to reason, when pity is bestowed without violating right, as when the poor are relieved, or the penitent forgiven." But nothing that is obedient to reason lessens the moral good. Therefore a passion of the soul does not lessen moral good.

As the Stoics held that every passion of the soul is evil, they consequently held that every passion of the soul lessens the goodness of an act; since the admixture of evil either destroys good altogether, or makes it to be less good. And this is true indeed, if by passions we understand none but the inordinate movements of the sensitive appetite, considered as disturbances or ailments. But if we give the name of passions to all the movements of the sensitive appetite, then it belongs to the perfection of man's good that his passions be moderated by reason. For since man's good is founded on reason as its root, that good will be all the more perfect, according as it extends to more things pertaining to man. Wherefore no one questions the fact that it belongs to the perfection of moral good, that the actions of the outward members be controlled by the law of reason. Hence, since the sensitive appetite can obey reason, as stated above (), it belongs to the perfection of moral or human good, that the passions themselves also should be controlled by reason.

Accordingly just as it is better that man should both will good and do it in his external act; so also does it belong to the perfection of moral good, that man should be moved unto good, not only in respect of his will, but also in respect of his sensitive appetite; according to Ps. 83:3: "My heart and my flesh have rejoiced in the living God": where by "heart" we are to understand the intellectual appetite, and by "flesh" the sensitive appetite.

Article 4: Whether any passion is good or evil in its species?

Augustine says (De Civ. Dei ix, 5) that "pity is a kind of virtue." Moreover, the Philosopher says (Ethic. ii, 7) that modesty is a praiseworthy passion. Therefore some passions are good or evil according to their species.

We ought, seemingly, to apply to passions what has been said in regard to acts (; )---viz. that the species of a passion, as the species of an act, can be considered from two points of view. First, according to its natural genus; and thus moral good and evil have no connection with the species of an act or passion. Secondly, according to its moral genus, inasmuch as it is voluntary and controlled by reason. In this way moral good and evil can belong to the species of a passion, in so far as the object to which a passion tends, is, of itself, in harmony or in discord with reason: as is clear in the case of "shame" which is base fear; and of "envy" which is sorrow for another's good: for thus passions belong to the same species as the external act.