“ The serious man is “of the world” and has no resource in himself. He does not even imagine any longer the possibility of getting out of the world, for he has given to himself the type of existence of the rock, the consistency, the inertia, the opacity of being-in-the-midst-of-the-world. It is obvious that the serious man at bottom is hiding from himself the consciousness of his freedom ”
 Jean-Paul Sartre, Being and Nothingness (1943). copy citation