 While Search for a Method (1957) had been published earlier, it is not until 1960 that Sartre completed the first volume—“Theory of Practical Ensembles”—of what is his final systematic work of philosophy, Critique of Dialectical Reason. The second volume, “The Intelligibility of History”, was published posthumously in French in 1985. It would be 1991 before both volumes were to be available in English, which goes some of the way towards explaining their subsequent neglect. It is also a book that rivals Being and Nothingness for difficulty, even if some of its goals and ambitions can be expressed straightforwardly enough. Never a member of the French Communist Party, Sartre nonetheless begins by laying his Marxist cards on the table: 