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mitsein
Heidegger's concept of 'being-with-others,' which underlies interpersonal phenomena like lying but is only a condition, not the origin, of bad faith.
1 chapter across 1 book
Being and Nothingness (1943)Jean-Paul Sartre
Chapter 2GT81
This chapter analyzes the concept of bad faith, distinguishing it from ordinary lying by emphasizing that bad faith is a form of self-deception where the deceiver and the deceived are the same consciousness. Sartre explores the ontological difficulties of bad faith, particularly how one can simultaneously know and hide the truth from oneself, and critiques psychoanalytic explanations that split the psyche to account for self-deception.