Chapter 33.—The Shame of Nakedness.
This kind of shame—this necessity of blushing—is certainly born with every man, and in some measure is commanded by the very laws of nature; so that, in this matter, even virtuous married people are ashamed. Nor can any one go to such an extreme of evil and disgrace, as, because he knows God to be the author of nature and the ordainer of marriage, to have intercourse even with his wife in any one’s sight, or not to blush at those impulses and seek secrecy, where he can shun the sight not only of strangers, but even of all his own relatives. Therefore let human nature be permitted to acknowledge the evil that happens to it by its own fault, lest it should be compelled either not to blush at its own impulses, which is most shameless, or else to blush at the work of its Creator, which is most ungrateful. Of this evil, nevertheless, virtuous marriage makes good use for the sake of the benefit of the begetting of children. But to consent to lust for the sake of carnal pleasure alone is sin, although it may be conceded to married people with permission.
33. Hoc pudoris genus, haec erubescendi necessitas certe cum omni homine nascitur, et ipsis quodammodo naturae legibus imperatur, ut in hac re verecundentur etiam ipsa pudica conjugia; nec quisquam tam male turpiterque proficiat, ut quia cognovit Deum esse conditorem naturae auctoremque nuptiarum, ideo etiam miscendus uxori, si quis eum videat, non de his motibus erubescat, quaeratque secretum, ubi non solum alienorum, verum etiam suorum omnium possit vitare conspectum. Itaque sua culpa sibi accidens malum, natura humana permittatur agnoscere; ne cogatur, aut quod est impudentissimum, de his suis motibus non erubescere, aut quod est ingratissimum, de sui creatoris operibus erubescere. Quo tamen malo, propter bonum generationis filiorum, bene utuntur pudica conjugia. Solius autem carnalis voluptatis causa libidini consentire, peccatum est; quamvis conjugatis secundum veniam concedatur.