Psychology of the Unconscious · 1917

An early, foundational statement of Jung's own path away from Freud. Here he first maps the layers of the unconscious and argues that behind our personal drives lies a deeper, shared ground - the seed of everything he would later call analytical psychology.

Psychological Types · 1921

The book that gave the world the words introvert and extravert. Drawing on twenty years of practice, Jung sorts out the ways people take in the world and make up their minds, and builds a map of temperament that reaches far beyond the clinic.

The Archetypes and the Collective Unconscious