Sartre’s account of bad faith is crucial to his philosophy because it discloses his theory of self-deception, consciousness’s relationship to objectification and objectivity, and what it is to exist authentically and inauthentically. For these reasons, ‘any comprehension of Sartre’s view of consciousness must rest on a thorough grasp of the character and implications of bad faith’. The recognition of the existence of a primitive form of pre-reflective self-consciousness is an important starting point for an understanding of more elaborate forms of self-consciousness that are concept- and language-dependent.