"Part intellectual history, part critical theory, The Last Man Takes LSD challenges the way we think about both Michel Foucault and modern progressive politics. One fateful day in May 1975, Foucault dropped acid in the southern California desert. In letters reproduced here, he described it as among the most important events of his life, one which would lead him to completely rework his History of Sexuality. That trip helped redirect Foucault's thought...