Sade, um humanismo impossível?

At a moment in which the philosophy of the Enlightenment seems to suggest a worldview freed from ancient fatality, and in which the French Revolution transforms cyclic time in progressive time, Sade exposes a type of fictional imagination that denounces anthropological optimism and the hope in progress. He refuses providentialism in history, finalism in nature, but denounces to the same extent the faith in a single man, as well as in all men assembled. Would this dark vision be the equivalent to Rousseau’s state of nature, a theoretical fiction destined to a better comprehension of the becoming of humanity?