Motus irae non potest habere aliquem motum animae contrarium, quia solummodo opponitur ei cessatio a motu: sicut philosophus dicit, in sua rhetorica, quod mitescere opponitur ei quod est irasci, quod non est oppositum contrarie, sed negative vel privative.
No movement of the soul can be contrary to the movement of anger because nothing else than cessation from its movement is contrary thereto: thus the Philosopher says (Rhet. ii, 3) that "calm is contrary to anger," by opposition not of contrariety but of negation or privation.
Singulare est in passione irae, quod non potest habere contrarium, neque secundum accessum et recessum, neque secundum contrarietatem boni et mali. Causatur enim ira ex malo difficili iam iniacente. Ad cuius praesentiam, necesse est quod aut appetitus succumbat, et sic non exit terminos tristitiae, quae est passio concupiscibilis, aut habet motum ad invadendum malum laesivum, quod pertinet ad iram. Motum autem ad fugiendum habere non potest, quia iam malum ponitur praesens vel praeteritum. Et sic motui irae non contrariatur aliqua passio secundum contrarietatem accessus et recessus.
The passion of anger is peculiar in this, that it cannot have a contrary, either according to approach and withdrawal, or according to the contrariety of good and evil. For anger is caused by a difficult evil already present: and when such an evil is present, the appetite must needs either succumb, so that it does not go beyond the limits of "sadness," which is a concupiscible passion; or else it has a movement of attack on the hurtful evil, which movement is that of "anger." But it cannot have a movement of withdrawal: because the evil is supposed to be already present or past. Thus no passion is contrary to anger according to contrariety of approach and withdrawal.
Similiter etiam nec secundum contrarietatem boni et mali. Quia malo iam iniacenti opponitur bonum iam adeptum, quod iam non potest habere rationem ardui vel difficilis. Nec post adeptionem boni remanet alius motus, nisi quietatio appetitus in bono adepto, quae pertinet ad gaudium, quod est passio concupiscibilis.
In like manner neither can there be according to contrariety of good and evil. Because the opposite of present evil is good obtained, which can no longer have the formal aspect of arduousness or difficulty. Nor, when once good is obtained, does there remain any other movement, except the appetite's repose in the good obtained; which repose belongs to joy, which is a passion of the concupiscible faculty.