Voluptuaries of all ages, of every sex, it is to you only that I offer this work; nourish yourselves upon its principles: they favor your passions, and these passions, whereof coldly insipid moralists put you in fear, are naught but the means Nature employs to bring man to the ends she prescribes to him; harken only to these delicious promptings, for no voice save that of the passions can conduct you to happiness.
To Libertines - Philosophy in the Bedroom (1795)