This volume collects three early but extremely important works by Carl Jung.THE PSYCHOLOGY OF DEMENTIA PRAECOXTHE THEORY OF PSYCHOANALYSIS Collected Papers on Analytical PsychologyCarl Gustav Jung was a Swiss psychiatrist and psychotherapist who founded analytical psychology. Jung proposed and developed the concepts of extraversion and introversion; archetypes, and the collective unconscious. His work has been influential in psychiatry and in the study of religion, philosophy, archeology, anthropology, literature, and related fields. He began his career as a psychiatrist at 25, in 1900, working under Dr. Eugen Bleuler in Zurich. In 1906, just before his first meeting with Freud in Vienna in 1907, Jung wrote this famous book "On the Psychology of Dementia Praecox." Ernest Jones described it as "a book that made history in psychiatry and extended many of Freud's ideas into the realm of the psychoses proper." A. A. Brill called this work indispensable for every student of psychiatry, as it established Jung as a pioneer and scientific contributor to psychiatry.