a mortali excusatur qui ex curiositate aspicit picturas obscoenas, quae non ita commovere solent.
(b) Leve peccatum per se non excedit aspicere ex curiositate animalia coeuntia, partes minus honestas mulieris, partes obscoenas ejusdem sexus.
(c) Actus praedicti culpa vacant si ex proportionata utilitate vel necessitate exerceantur.
Similarly immodest conversation will be mortally sinful if it is about very obscene subjects between young persons, especially if they be of different sexes. It will be venially sinful if the subject be less objectionable, or if a dirty joke is made in passing. The confessor may, as a rule, presume that grown-up penitents, especially if they be married, who accuse themselves of immodest talk, are only guilty of venial sin; and so he may spare himself and them any questioning on the matter.
The reading of very obscene books without any good reason can hardly be excused from grave sin, unless by experience the reader knows that they have little or no effect upon him, and this should not be lightly presumed. Reading novels in which the passion of love is depicted in warm colours is very dangerous, especially for the young, and unless there is some good excuse for it can hardly be without some sin. This will all the more be true of novels which are suggestive of evil, and fill the mind with dangerous thoughts.
3. The morality of kissing and embracing is regulated by the same principles as the above. Kissing in the ordinary way 4 of greeting or leave-taking between relations and friends, according to the custom of the country, as theologians say, is of course harmless and allowed. Even if such marks of pure affection or civility unintentionally sometimes cause venereal excitement, no notice should be taken of it. Apart from this, kissing and embracing, especially between different sexes, naturally tends to cause venereal excitement, and is more or less sinful. Mortal sin will be committed as a rule by indulging in passionate and prolonged embraces and kisses; otherwise the sin will be only venial. Those who .intend marriage and are already engaged to each other have an excuse for showing each other the ordinary signs of affection, but they should use their privilege with due caution and Christian prudence. As a rule, little harm will be done if they have a witness of their conduct, or if they only permit themselves to do what they would do if such a witness were present.
4. Non-consummated sins of impurity are specifically di stinct from consummated sins, in the same way as attempted
