A. On an Enemy per se

12. Speaking in the first way, I say that an enemy is not only evil by of way privation of good but also by way of positive habit, just as not only is he called unjust who lacks the habit of justice but also he who has the habit of injustice (contrary to the habit of justice) caused by his acts (as in Boethius on the category of quality in his Categories of Aristotle 3). In this way, since friendship regards the good of virtue in the friend loved, a good agreeing with the act of virtue in the friend loving, so enmity regards the evil of vice in the enemy, a vice disagreeing with the good. An enemy as such, then, is both evil and vicious, and consequently in no way to be loved. And the question here is taken in this way, for it is in this way that enemies were hated by him who said, “Let sinners and the unjust perish from the land, so that they be no more etc.” [Psalm 103.35], and not like others among the unjust [who were converted], “Turn the wicked and they will not be [unjust]” [Proverbs 12.17].