Question — Noldin, Summa of Moral Theology
Question Third. On Consummated Sins of Lust.
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14. Declarations. Those sins are called consummated in which effusion of semen has place. They are of two genera: some are according to nature, in which the effusion of semen of itself is apt for the generation of man; others are against nature, in which the effusion of semen is unfit for the generation of man. In the former, the end which nature intends in the voluntary effusion of semen is obtained; in the latter, it is frustrated. Wherefore sins against nature are of themselves graver than sins of lust according to nature.
a. Sins according to nature are numbered as six: fornication, adultery, incest, defilement, sacrilege, and rape. These sins differ specifically among themselves, not indeed by reason of lust, but on account of another special circumstance: for they are opposed to the virtue of chastity in the same way, but to each one there is superadded a circumstance which is properly not against chastity, but against another virtue.
b. Sins against nature are three: pollution, sodomy, and bestiality. These sins differ from one another in species by reason of lust, because each includes a special deformity and opposition against the virtue of chastity.
Within this question
- Article First. On Sins According to Nature.nn. 15–28
Article Two. On Sins Against Nature.nn. 29–47
- § 1. On Pollution.nn. 29–41
- § 2. On Sodomy.nn. 42–43
- § 3. On Bestiality.nn. 44–47