On the Psychology of the Unconscious (Über die Psychologie des Unbewußten) is a critical work documenting C.G. Jung's divergence from Freud. Published in 1912 in German, this translation brings his earliest thoughts on the nature of the Unconscious to the modern reader. On the Psychology of the Unconscious offers a transformative exploration of the symbolic, emotional, and archetypal processes underlying human behavior and marks a pivotal step in his departure from Freud's psychoanalytic framework. This work reflects Jung's engagement with the tension between the individual and collective dimensions of the unconscious, emphasizing the universal symbols and mythological structures that shape personal psychic experience. Jung critiques Freud's reductionist focus on sexuality, proposing instead a broader understanding of libido as a general psychic energy that manifests in symbolic forms in dreams, fantasies, and cultural expressions.