A philosopher described Sartre's philosophy as one "rooted in experience and directed towards the analysis of experience," of experiences which are "paradigm cases" for him. But there are, beyond these, individual phenomena which are irreducible to philosophy as a coherent body of thought. Sartre therefore relies on literature to complement philosophy and on literary criticism to mediate between literature and philosophy.

Sartre found or founded in literature vertigo and anguish as the experience of man's freedom; man's gaze as the revelation of the other, interiorized in shame when dominated, in pride when dominating; the privileged moments of a choice of being or of a profound change in direction as "paradigm cases" of the project and praxis, either authentic in a spirit of contestation or in bad faith in the "spirit of seriousness." Literature is also the medium in which description of the act of living discloses knowledge. Sometimes...