...once I admitted the arguments of necessity and force majeure put forward by the less eminent, I couldn’t reject those of the eminent. To which they retorted that the surest way of playing the game of the red robes was to leave to them the monopoly of the death penalty. My reply to this was that if you gave in once, there was no reason for not continuing to give in. It seems to me that history has borne me out; today there’s a sort of competition who will kill the most. They’re all mad over murder and they couldn’t stop killing men even if they wanted to.

Soon after the event on 6 August 1945 he was one of the few French editors to publicly express opposition and disgust to the United States' dropping the atomic bomb in Hiroshima. His views contributed to the rise of the philosophy known as absurdism. To distinguish his ideas scholars sometimes refer to the Paradox of the Absurd when referring to "Camus's Absurd".

In an interview in 1945 Camus rejected any ideological associations: "No I am not an existentialist. Sartre and I are always surprised to see our names linked. In 1949 Camus founded the Group for International Liaisons within the Revolutionary Union Movement after his split with Garry Davis's Citizens of the World movement of which the surrealist André Breton was also a member.