The problem of lying to, or deceiving oneself is currently one of the most debated in analytical philosophy. Now, since analytical philosophers are aware that Sartre defined "bad faith" as lying to oneself, as self-deception, and since moreover they find relatively coherent arguments in Sartre's text, they do not hesitate to include these arguments in their debates, if only to contest them. "To be dead is to be a prey for the living," one reads in Being and Nothing- ness* (p. 695). One imagines Sartre rolling over in his grave. For this philosophy of mind is truly the Other of Sartre's philosophy. Yet, at the price of a treacherous translation, this philosophy gets some thing from Sartre, and perhaps gives him something in return. In a slightly surreal, perhaps even monstrous way, I am going to make the two philosophies engage in a dialogue on the prob lem of lying to oneself.