Sartre's experimentation in February 1935 with the drug mescalin has been well documented by Simone de Beauvoir in her book The Prime of Life.1 She recalls that Sartre experienced under the influence of the drug not exactly hallucinations, ‘but the objects he looked at changed their appearance in the most horrifying manner:’ [POL 209]. The residual effects of this nightmarish experience left Sartre, not only for several days ‘in a state of deep depression’ [POL 210], but also produced moods that ‘recalled those that had been induced by mescalin.’