1584. The commandment of love of neighbor is sufficiently complied with as to its motive, even though the supernatural motive is not actually present before the mind, or other and natural motives are also present. (a) Thus, the supernatural motive directs our love of neighbor, if it is present virtually, as will be explained in 1590. (b) Natural motives of love that are good in themselves (such as ties of relationship or nationality, common intellectual or other interests, the virtue or ability of a neighbor) do not detract from the supernaturality of love, provided their influence is subordinated to the divine friendship and the desire of beatitude for the neighbor. Even a certain amount of natural repugnance is not inconsistent with charity; on the contrary, charity is seen to be great, if for love of God one does good to implacable enemies, or waits on persons suffering from a loathsome disease.
1585. Fulfillment of the Commandments of Charity.—We speak now only of the commandment of love, in which the other commandments of charity are contained (see 1550 b). The love which is commanded must have the following qualities: (a) on the side of the subject who loves, it must be internal and made at the proper times—that is, one must love from the heart and affection, as well as in works and manifestations, and must make and renew the act of love as the law requires; (b) on the side of the object loved, it must be both universal and well-ordered; one must not only love all to whom charity is due (see 1133 sqq.), but one must also bestow love according to the rank of precedence in which charity is due (see 1158 sqq.).
1586. The act of charity can be made in various ways.
(a) It is made in itself, when one elicits or expresses love; it is made in its manifestations, when one performs an act of virtue distinct from charity. One who sincerely loves God with his whole heart will keep the commandments (John, xiv. 21), and hence acts of temperance, justice, fortitude, etc., may be called acts of love, in the sense that they are indications of love.
(b) The act of charity may be made internally or externally. Thus, affection for another as a friend in God, and a sincere desire of his good, are internal acts of love; while spiritual or temporal alms bestowed upon him, such as instruction or aid in time of sickness, are external acts of love.
(c) The act of charity may be made explicitly or implicitly. Charity is called explicit with reference to a person or object which is loved in itself, and not as included in another; it is called implicit with reference to a person or object loved as included in another, as when means and end involve each other, or a part is contained in the whole. Thus, he who loves God above all things loves God explicitly and his neighbor implicitly; he who loves his neighbor as a future co-sharer in bliss loves his neighbor explicitly and God implicitly (see 1549); he who includes all mankind in a common act of love, gives explicit love to the race collectively, and implicit love to individual members of the race not mentioned (e.g., enemies or strangers).
1587. For the fulfillment of the commandment of charity other acts of virtue are not enough. There must also be love. (a) Thus, as to charity towards God, our Lord declares that love of God is the great commandment on which the others depend, and St. Paul makes salvation depend on love: “If any man love not our Lord Jesus Christ, let him be anathema” (I Cor., xvi. 22). (b) As to charity towards the neighbor, the fulfillment of other commandments in his regard is inferior to the fulfillment of the commandment of fraternal love, and thus the commandments of justice to others are distinct from the commandment of love. Innocent XI condemned the proposition that we are not obliged to love our neighbor by a formal act of love (Denzinger, _Enchiridion_, n. 1160).
1588. For the fulfillment of the law of charity, external acts of love are not enough; there must also be internal love or affection.
(a) With regard to charity towards God, there can be no question of external charity through acts of beneficence, as is clear; but one is obliged to signify one’s love of God, if silence would cause scandal or convey an expression of hatred of God. Mere lip-service, however, will not do, for God must be loved and served from the heart (Matt., xxii. 37; Eph., vi, 6; II Thess. iii., 5; etc.).
(b) With regard to charity towards the neighbor, external charity is commanded (see 1210 sqq. and 1551). But there must also be internal charity, for we are bidden to love our neighbor as we love ourselves (Matt, xxii. 39), as Christ loved us (John, xv. 12), from the heart (I Pet., i. 22). If a man distributed his goods to feed the poor, not out of love, but out of vanity or other sinful motives, his act would not be an exercise of charity. Innocent XI condemned the proposition that we may satisfy through external acts alone the precept of loving our neighbor (Denzinger, n. 1161).