The two sexes mutually corrupt and improve each other. This I believe to be an indisputable truth, extending it to every virtue. Chastity, modesty, public spirit, and all the noble train of virtues, on which social virtue and happiness are built, should be understood and cultivated by all mankind, or they will be cultivated to little effect. And, instead of furnishing the vicious or idle with a pretext for violating some sacred duty, by terming it a sexual one, it would be wiser to shew that nature has not made any difference, for that the unchaste man doubly defeats the purpose of nature, by rendering women barren, and destroying his own constitution, though he avoids the shame that pursues the crime in the other sex. These are the physical consequences, the moral are still more alarming; for virtue is only a nominal distinction when the duties of citizens, husbands, wives, fathers, mothers, and directors of families, become merely the selfish ties of convenience.
Why then do philosophers look for public spirit? Public spirit must be nurtured by private virtue, or it will resemble the factitious sentiment which makes women careful to preserve their reputation, and men their honour. A sentiment that often exists unsupported by virtue, unsupported by that sublime morality which makes the habitual breach of one duty a breach of the whole moral law.