" Novels, says Sartre, are not life, but they owe our power upon us, as upon himself as an infant, to the fact that they are somehow like life. In life, he once remarked, 'all ways are barred and nevertheless we must act. So we try to change the world; that is, to live as if the relations between things and their potentialities were governed not by deterministic processes but by magic.' The as if of the novel consists in a similar negation of determinism, the establishment of an accepted freedom by magic. We make up aventures, invent and ascribe the significance of temporal concords to those 'privileged moments' to which we alone award their prestige, make our own human clocks tick in a clockless world. And we take a man who is by definition de trop, and create a context in which he isn't.

The novel is a lie only as our quotidian inventions are lies. The power which goes to its making--the imagination --is a function of man's inescapable freedom. This freedom, in Mary Warnock's words, 'expresses itself in his ability to see things which are not.' It is by his fiction that we know he is free. It is not surprising that Sartre as ontologist, having to describe many kinds of fictive behaviour, invents stories to do so, thus moving into a middle ground between life and novel. .... "

― Frank Kermode , The Sense of an Ending: Studies in the Theory of Fiction