1139. Love of neighbor is of three kinds: (a) sinful love, which is all love that is excessive, irregulated, or directed to what is evil in others; (b) natural love, which is all love that is attracted by some excellence of a human or created kind, such as knowledge or skill; (c) supernatural love, which is that by which one is drawn towards another on account of the divine in him, such as his gifts of grace and of heavenly calling.
1140. Hence, it seems that there is no such thing as a special and distinct virtue of human friendship. (a) Thus, friendships of utility or of pleasure are clearly not virtues, since they are not caused by attraction towards moral good. (b) Virtuous friendships are the consequences of virtues rather than virtues, for the attraction one has for one’s friend arises from the attraction for the virtue one sees in him. Thus, friendship for another because he is not the slave of passion, is an exercise of the virtue of temperance. (c) Supernatural friendships are not distinct from the virtue of charity, for the gifts and graces which evoke them are participations of God’s goodness, which is the object of charity.
1141. The neighbors whom we are to love according to charity are all those who can have with us the relation of supernatural friendship, that is, all rational creatures. (a) Hence, the Angels are objects of this love, and in the resurrection men will be fellow-citizens with them (Heb., xii, 22); (b) our fellow-men are objects of this love, for they also are called to the heavenly companionship (ibid., 23).
1142. Charity for Sinners.—Should we love with charity those who are sinners and enemies of God? (a) If we consider sinners precisely as enemies of God, we may not love them, for their sin is an evil, an offense to God and a hurt to themselves. On the contrary, we should hate even in those who are nearest to us whatever is opposed to love of God (Luke, xiv. 26). (b) If we consider sinners precisely as creatures of God, we may not love them with charity or as friends, if they are demons or lost souls; for in their case fellowship with us in beatitude is out of the question. We may, however, love their nature out of charity towards God, desiring that it be preserved by Him for His glory. (c) If we consider sinners precisely as creatures of God, we may love them with charity or as friends, if they are still in the present life; for we should wish that God may be glorified in them by their conversion and salvation. The commandment of love of neighbor was not restricted to loving the just.
1143. If sinners be considered precisely as they are enemies of God, is it lawful to hate them and wish evil to them? (a) It is lawful to hate the evil that is in sinners, but not their persons. He who hates their sin, loves themselves, for their sin is against their own interests. In this way the Psalmist hated sinners (Ps. cxviii. 113, cxxxviii. 32). (b) It is lawful to wish that punishment overtake sinners, if one is actuated, not by a spirit of malevolence, but by love of justice (Ps. lvii. 11; Wis., i. 13; Ps. x. 8). It is also lawful to wish that the sinfulness that is in them may be destroyed, that they themselves may be saved. In this sense we may understand some of the imprecations that are met in scripture (Ps. ciii. 35). Thus, a judge sentences a criminal, not because he hates the man before him, but because he wishes to reform him, or to protect society, or to do an act of justice.
1144. The evils of punishment or of destruction of sin are in a broader view not evils, but goods. But the following punishments may not be desired: (a) that anyone living lose his soul and be condemned to hell, for charity requires that we desire the salvation of sinners; (b) that a sinner be punished by blindness of heart and go from bad to worse. He who wishes sin approves of the offense to God; but it does not seem unlawful to wish that God permit a person to fall into sin, as a means to a spiritual awakening.
1145. Association with Sinners.—(a) It is never lawful to associate with sinners in their sins, for thus one becomes a sharer in their guilt. Hence, St. Paul says: “Go out from among them and be ye separate” (II Cor., vi. 17). (b) It is not lawful to associate with sinners even in matters indifferent or good, if one is weak and apt to be led away by them into sin (see 258 sqq.). (c) It is lawful to associate with sinners in things not forbidden, if one is not endangered, and if one aims to convert them to better ways. Thus, our Lord ate with sinners, because He came to call them to repentance (Matt., ix. 10-13).
1146. Friendship with Sinners.-(a) If this means that we like and dislike the same things as the sinners, it is an evil friendship, and it should be discontinued; (b) if it means that we seek to bring the sinner to imitate our good likes and dislikes, the friendship pertains to charity (Jer, xv. 19).
1147. Should one continue to show signs of special regard to a friend who has taken to ways of sin? (a) As long as there is hope of betterment, one should not deny the other the benefits of friendship. If it would be wrong to desert a friend because he was perishing from starvation, much more would it be wrong to desert him because he was perishing morally. (b) But if all hope of betterment has gone, one should give up a companionship which is not profitable to either party, and may prove harmful.
1148. Charity towards Enemies.—Enemies can be considered in two senses: precisely as enemies, or precisely as human beings destined for beatitude. (a) If considered as enemies, they are not to be loved with charity—that is, it should be displeasing to us that they are enemies and opposed to us, for it would be contrary to charity to love in a neighbor that which is evil in him. (b) If considered as human beings, enemies should be loved with charity—that is, their nature created by God and capable of receiving grace and glory should be pleasing to us, for love of God should make us love all that belongs to Him, even that which is not well disposed towards ourselves.