In this major new reading of Sartre's life and work, Paige Arthur traces the relationship between the philosopher's decades-long commitment to decolonization and his intellectual positions. Where other commentators have focussed on the tensions between Sartre's Marxism and his account of existential freedom, usually to denigrate one in favor of the other, Arthur shows how Sartre’s political engagement with global liberation movements and his philosophical framework developed alongside one another.