The first and exhaustive biography of twentieth-century leftist philosopher Andre Gorz. Recognized as one of the most lucid and innovative critics of contemporary capitalism, Andre Gorz (1923-2007) was known for asking fundamental questions regarding the meaning of life and work. This first biography of a unique figure operating at the confluence of literature, philosophy, and journalism revisits half a century of intellectual and political life. Born Gerhart Hirsch in Vienna, he studied in Switzerland before opting to live and work in France. A self-taught existentialist thinker, he was constantly revising his view of the world, unafraid to break new theoretical ground in doing so. Influenced by Marx, Husserl, Sartre, and Illich, he had very close affinities with the new thinking on the Left that was coming out of Italy in the 1960s and 70s. He was also one of the first thinkers to shape political ecology and to advocate de-growth. The intellectual on the editorial board of Sartre's journal Les Temps Modernes, Gorz was also a mainstream journalist. He wrote in L'Express under the sobriquet Michel Bosquet before joining others in the creation of Le Nouvel Observateur. Through Gorz's life journey, we meet not only Sartre and de Beauvoir, but also Herbert Marcuse, Fidel Castro, Daniel Cohn-Bendit, Ivan Illich, Felix Guattari, Antonio Negri, and many others. Beyond his poignant autobiographical narratives, The Traitor and Letter to D, which attest to his deep humanity, Gorz remains a precious guide for all who believe that another world is still possible.