Quanto virtus fuerit perfectior, tanto magis passionem causat, quia fiet redundantia usque ad appetitum sensitivum, secundum quod vires inferiores sequuntur motum superiorum, ut supra dictum est.
The more perfect a virtue is, the more does it cause passion, because it will overflow into the sensitive appetite, insofar as the lower powers follow the movement of the higher, as stated above (q17 a7; q24 a3).
Si passiones dicamus inordinatas affectiones, sicut Stoici posuerunt, sic manifestum est quod virtus perfecta est sine passionibus. Si vero passiones dicamus omnes motus appetitus sensitivi, sic planum est quod virtutes morales quae sunt circa passiones sicut circa propriam materiam, sine passionibus esse non possunt.
If we take the passions as being inordinate emotions, as the Stoics did, it is evident that in this sense perfect virtue is without the passions. But if by passions we understand any movement of the sensitive appetite, it is plain that moral virtues, which are about the passions as about their proper matter, cannot be without passions.
Cuius ratio est, quia secundum hoc, sequeretur quod virtus moralis faceret appetitum sensitivum omnino otiosum. Non autem ad virtutem pertinet quod ea quae sunt subiecta rationi, a propriis actibus vacent, sed quod exequantur imperium rationis, proprios actus agendo.
The reason for this is that otherwise it would follow that moral virtue makes the sensitive appetite altogether idle. Whereas it is not the function of virtue to deprive the powers subordinate to reason of their proper activities, but to make them execute the commands of reason, by exercising their proper acts.
"Nullus iustus est qui non gaudet iusta operatione", ut dicitur in I Ethic.
"No man is just who rejoices not in doing justice", as stated in Ethic. i, 8.
Passiones inordinatae inducunt ad peccandum, non autem si sunt moderatae.
It is inordinate, not ordinate, passion that leads to sin.
Virtus passiones inordinatas superat; moderatas autem producit.
Virtue overcomes inordinate passion; it produces ordinate passion.