Since he did not bring himself to do this, he lived in a state of contradiction and
since he both knew and did not want to know for whom he was writing, He was fond of speaking of his solitude, and rather than assume responsibility for the public which he had slyly chosen, he concocted the notion that one writes for oneself alone or for God.
Sartre-Jean-Paul-What-is-literature¿-Introducing-Les-Temps-modernes-The-nationalization-of-literature-Black-orpheus
