Bad conscience occupies a pivotal and contested position across the depth-psychological corpus, serving as the nexus where instinct, guilt, morality, and self-punishment converge. Nietzsche furnishes the term’s most radical genealogy: in the second essay of the Genealogy of Morals, bad conscience emerges not as a moral achievement but as the catastrophic result of instinctual drives turned inward when their outward expression was blocked by the constraints of civilization. Man, becoming ‘the inventor of the bad conscience,’ transforms cruelty upon himself, giving rise to what Nietzsche calls ‘the gravest and uncanniest illness.’ Freud, approaching from a complementary direction, roots the phenomenon in the dread of losing love and the internalization of external prohibitive authority. Jung complicates both accounts by situating conscience — including its negative, guilt-laden form — within the autonomy of the psyche, treating bad conscience as arising where the symbolic image compensates for the absence of consciously registered wrongdoing, as when a dream produces black-stained hands in place of felt guilt. Heidegger displaces the moral register altogether, ontologizing guilt as a structural feature of Dasein’s Being. Ricoeur synthesizes these trajectories, reading Nietzsche and Heidegger against each other and identifying bad conscience with the position of the complainant whose reactive will denigrates the strong. The tensions among genealogical, ontological, psychodynamic, and phenomenological accounts make bad conscience one of the most productive and unresolved concepts in the entire library.