Chapter I. The Nature of Impurity

THE means devised by God for the preservation and increase of the human race is the union of the sexes. This union has for its primary object the procreation of children, who require for their proper education the long and assiduous care of both father and mother. Nature, then, as well as the law of God and of the Church, requires that children should only be begotten of parents joined in lawful and indissoluble wedlock. As nature has taken care that the individual should take the food and drink necessary for his personal support by giving him the spur of appetite for nourishment and pleasure in taking it, so the same great Mother has taken care of the race by joining venereal pleasure to the act of procreating children. This venereal pleasure is lawful when indulged in between married people and according to the laws of marriage. In all other cases it is unlawful, and is forbidden by the Sixth and Ninth Commandments.

Venereal pleasure must be distinguished from sensual and from venereo-sensual pleasure. Venereal pleasure has its seat in the genital organs, and is caused by their motions, the irregular motions of the flesh. Sensual pleasure is other than venereal, and rises from indulgence of the senses, from the contemplation of a beautiful picture, from listening to sweet music, from touching the glossy and soft coat of a cat. This sensual pleasure is morally harmless in itself, but there is a certain kind of pleasure which is sensual in its origin but which is connected with, and ordinarily causes, venereal pleasure. It arises from such acts as voluptuous kissing, and is called by divines venereo-sensual, On account of its connection and tendency, venereo-sensual pleasure is evil, and ordinarily is more or less sinful, as we shall see in what follows.

Sins of impurity are consummated or non-consummated. Consummated sins go as far as complete venereal pleasure, which is had through intercourse or through pollution. They are consummated according to nature if the generation of offspring can follow from them; otherwise they are consummated against nature. Non-consummated sins are looks, touches, and immodest conversation, which do not reach complete venereal pleasure.

All sins of impurity of whatever kind or species are of themselves mortal, ‘This doctrine is taught in such passages of Holy Scripture as the following: 1 Cor. vi 9-10; Gal. v 19; Matt. v 28. Moreover, as we saw above, those sins are grievous which cause great harm to society or to the individual; but there is scarcely any cause so prolific of public and private evil of all sorts as sins of impurity, so that we must conclude that they are grievous even by the light of reason. Furthermore, all sins of impurity, if voluntary in themselves and fully deliberate, are mortal; or in other words, it is grievously sinful directly to seek any even slight unlawful venereal pleasure, or to consent to it deliberately even when it has not been directly sought, This doctrine is the approved teaching of theologians, and it has a rational basis, inasmuch as the tendency of men to these sins is so strong and their weakness so great, that slight indulgence in venereal pleasure almost necessarily leads to grave excesses, so that even in light matter there is the whole reason of the prohibition, and so all sins of impurity, if fully deliberate and voluntary in themselves, are mortal, and there are none that are venial merely on account of parvity of matter.

On the other hand, if venereal pleasure is not voluntary in itself but only in its cause, nor deliberately consented to when it arises, although it was foreseen that it would follow from some other action, as from reading a lascivious book, or looking at an immodest object out of curiosity, it may be only venially or it may be mortally sinful, according to circumstances. In general, if in the case in question there is proximate danger of giving consent to the impure pleasure, or if its cause is of its nature such as to occasion great venereal pleasure, this will be mortally sinful even when only indirectly voluntary; in other cases it will be only venially sinful.¹ This same principle will guide us in questions concerning the greater or less malice of venereo-sensual pleasure.

¹ Cf. Book I, p. 8.