"The unconscious is not a theatre, but a factory," wrote Gilles Deleuze and FA©lix Guattari in Anti-Oedipus (1972), instigating one of the most daring intellectual adventures of the last half-century. Together, the well-known philosopher and the activist-psychiatrist were updating both psychoanalysis and Marxism in light of a more radical and "constructivist" vision of capitalism: "Capitalism is the exterior limit of all societies because it has no exterior limit itself. It works well as long as it keeps breaking down." Few people at the time believed, as they wrote in the often-quoted opening sentence of Rhizome, that "the two of us wrote Anti-Oedipus together." They added, "Since each of us was several, that became quite a crowd." These notes, addressed to Deleuze by Guattari in preparation for Anti-Oedipus, and annotated by Deleuze, substantiate their claim, finally bringing out the factory behind the theatre. They reveal Guattari as an inventive, highly analytical,...