Intended to contribute, in his own words, to a "left-wing critique of Stalinism that would help put some substance back into the revolutionary project here in the West," they are the record of a shared history. At the same time they chart Althusser's critique of the theoretical system unveiled in his own major works, and his developing practice of philosophy as a "revolutionary weapon." Attesting to the unique place which Althusser has occupied in modern intellectual history-between a tradition of Marxism which he sought to reconstruct, and a "post-Marxism" which has eclipsed its predecessor-these texts are indispensable reading.