Polarity stands as one of the axial concepts in depth psychology, designating the structural fact that psychic life is organized through the tension of opposites rather than through any single, undivided principle. The corpus reveals several distinct registers in which this concept operates. Jung establishes its ontological primacy: consciousness and the unconscious are, as Hillman paraphrases him, ‘created into a polarity at the same moment out of original twilight states,’ meaning that differentiation itself is polar in nature. Peterson, drawing on Edinger, extends this into existential territory — polarity is not merely a feature of mental life but of being itself, with the alcoholic’s predicament serving as a paradigmatic symbol of the universal psychospiritual tension that underwrites all consciousness. Samuels subjects the Jungian typological deployment of polarity to critical scrutiny, questioning whether the superior/inferior function polarity survives empirical testing and whether it honors Jung’s own intuition that true opposites share a common base. Hillman radicalizes the discussion archetypal-therapeutically, framing senex and puer not merely as a convenient pair but as a ‘split archetype’ whose pathological dissociation from each other names a specifically modern cultural wound. Beyond the strictly Jungian orbit, Arroyo imports the concept into somatic and astrological frameworks via Randolph Stone’s Polarity Therapy, while Sardello grounds polarity in terrestrial electromagnetism as a cosmological principle. The concept thus spans ontology, typology, clinical practice, cosmology, and cultural diagnosis — its tensions productive, never merely dualistic.