Forming diptych with "Mental commodity", this book can also be read independently. The reader is introduced to both main currents of contemporary thought, and the most vital problems of philosophy "with what" we think? Why can we not be "Cartesian"? What are the social conditions of thought? Descombes's book is not only exciting and deep: it is also a philosophical style feast in the great French tradition, both brilliant and rigorous. That changes we philosophers fashionable ...