Les Temps modernes
Simone de Beauvoir (in her essay "Must we burn Sade?", published in "Les Temps modernes", December 1951 and January 1952) and other writers have attempted to locate traces of a radical philosophy of freedom in Sade's writings, preceding modern existentialism by some 150 years. He has also been seen as a precursor of Sigmund Freud's psychoanalysis in his focus on sexuality as a motive force. The surrealists admired him as one of their forerunners, and Guillaume Apollinaire famously called him "the freest spirit that has yet existed".