" It is utterly misguided to say that the mouth of a woman or young boy must be absolutely clean in order to give pleasure; putting all manias to one side, I shall grant you if you wish that a man who craves a stinking mouth does so only out of depravity, but you must in return grant me that a mouth without the slightest fragrance gives no pleasure at all when kissed – there must always be a certain spice, a certain piquancy to all such pleasures and this picquancy is found only in a little filth. "

― Marquis de Sade , The 120 Days of Sodom