Purity

The Virtue of Purity.—As abstemiousness and sobriety preside over the pleasures of the self-preservative instinct, so purity governs those that pertain to the species-preservative instinct. Purity is an inclusive name for the virtues of chastity and decency or pudicity, and its office is to regulate proximately the internal movements of the soul (thoughts and desires) and remotely the external words and acts that have to do with sexual delights.

(a) Chastity in its strictest sense is a virtue that moderates or chastens through reason venereal pleasure, chiefly as to its principal or consummated act (i.e., intercourse, semination) or as to its principal bodily centers (i.e., the genital organs). Hence, there is a twofold chastity, conjugal and celibate: conjugal chastity abstains from unnatural pleasure, and uses the natural reasonably in marriage; celibate chastity abstains from all venereal pleasure, as being unlawful in the single state.

(b) Decency (pudicitia) in its strictest sense is a virtue that moderates by the sense of shame venereal pleasure chiefly in its secondary or non-consummated external acts (e.g., looks, conversations, touches, embraces, kisses), which are related to the principal act as being an enticement to it, its preparation, or its external sign and accompaniment. The conjugal act, though lawful, occasions a feeling of shame, and the same is true of the non-consummated acts; but decency is especially concerned with these latter, because they are usually more openly performed than the consummated act. Decency means, then, that manifestations of carnal desire should be conducted with a sense that this desire arises from a lower and rebellious passion, removed in itself farthest from reason, and not more suited for unrestrained expression or public exhibition than other lower animal acts. The sense of shame and decency is a protection to the virtue of the unmarried and the married, restraining the former from the unlawful and holding the latter to moderation in the use of the lawful.

Chastity and decency are not separate virtues; rather decency is a circumstance of chastity. (a) Thus, chastity moderates also the secondary acts, for reason must chastise the pleasure that is taken in these acts, if this passion is to be kept in due bounds, (b) Decency moderates also the primary act, for in the use of marriage there should be nothing unworthy, nothing to bring a blush of confusion.