Believe me, Eugenie, the words "vice" and "virtue" supply us only with local meanings. There is no action, however bizarre you may picture it, that is truly criminal; or one that can really be called virtuous. Everything depends on our customs and on the climates we live in. What is considered a crime here is often a virtue a few hundred leagues away; and the virtues of another hemisphere might, quite conversely, be regarded as crimes among us. There is no atrocity that hasn't been deified, no virtue that hasn't been stigmatized.
Marquis de Sade, Philosophy in the Boudoir or, The Immoral Mentors
custom, moral-relativism, morality, vice, virtue