On the Psychology of the Unconscious

In this treatise Jung introduced the concept of the personal and collective unconscious, the latter being a reservoir of universal memories, patterns and symbols shared by all human beings. He also began to explore the role of symbols in mediating between the conscious and unconscious realms, and shifted the understanding of libido from Freud's primarily sexual energy perspective to a broader life force, arguing that Freud’s miopic focus on sexual desire blinds him to more fundamental metaphysical realities. Although the fully developed concept of archetypes would come later, Jung touched on these primordial, universally recognized symbols that reside in the collective unconscious. This essay, with its emphasis on both individual and shared unconscious content, marked a significant departure from Freud's theories and heralded the basic concepts that would later become central to Jung's analytical psychology.

In the fall of 1912, C.G. Jung, serving as president of the International Psychoanalytic Association, gave a series of lectures in New York in which he critiqued and redefined the foundations of psychoanalysis. His views were deemed unacceptable by Freud, resulting in a significant rift within the Freudian school. Jung challenged Freud's perspectives on sexuality, the origins of neuroses, dream analysis, and the nature of the unconscious, and he was the first to advocate that every analyst should undergo his or her own analysis. Over time, Jung's critiques have proven remarkably insightful, while paving the way for the development of his own discipline, analytical psychology. This publication is emblematic of this historically important divergence.

This updated edition offers a fresh, accessible translation of Carl Jung’s early scientific writings, originally intended for an academic audience. The translation is accompanied by a thought-provoking Afterword by the translator, which explores the philosophical foundations, historical context, and lasting impact of Jung’s ideas from his early clinical work under Freud to his later metaphysical philosophy such as Aion and Synchronicity.