Whether we ought to do good to all?

Objections

Objection 1 : It would seem that we are not bound to do good to all. For Augustine says (De Doctr. Christ. i, 28) that we "are unable to do good to everyone." Now virtue does not incline one to the impossible. Therefore it is not necessary to do good to all.
Objection 2 : Further, it is written (Ecclus. 12:5) "Give to the good, and receive not a sinner." But many men are sinners. Therefore we need not do good to all.
Objection 3 : Further, "Charity dealeth not perversely" (1 Cor. 13:4). Now to do good to some is to deal perversely: for instance if one were to do good to an enemy of the common weal, or if one were to do good to an excommunicated person, since, by doing so, he would be holding communion with him. Therefore, since beneficence is an act of charity, we ought not to do good to all.