“In October 1951, Camus published The Rebel. In it, he gave voice to a roughly drawn ‘philosophy of revolt’. This wasn’t a philosophical system per se, but an amalgamation of philosophical and political ideas: every human is free, but freedom itself is relative; one must embrace limits, moderation, ‘calculated risk’; absolutes are anti-human. Most of all, Camus condemned revolutionary violence. Violence might be used in extreme circumstances (he supported the French war effort, after all) but the use of revolutionary violence to nudge history in the direction you desire is utopian, absolutist, and a betrayal of yourself.”
“The problem is that, for Sartre and many others on the Left, communism required revolutionary violence to achieve because the existing order must be smashed. Not all leftists, of course, endorsed such violence. This division between hardline and moderate leftists – broadly, between communists and socialists – was nothing new. The 1930s and early ’40s, however, had seen the Left temporarily united against fascism. With the destruction of fascism, the rupture between hardline leftists willing to condone violence and moderates who condemned it returned. This split was made all the more dramatic by the practical disappearance of the Right and the ascendancy of the Soviet Union – which empowered hardliners throughout Europe, but raised disquieting questions for communists as the horrors of gulags, terror and show trials came to light. The question for every leftist of the postwar era was simple: which side are you on?”
SOURCE: Dresser, Sam. “How Camus and Sartre Split up over the Question of How to Be Free.” Aeon.