Carl Jung, in full Carl Gustav Jung, (born July 26, 1875, Kesswil, Switzerland—died June 6, 1961, Küsnacht), Swiss psychologist and psychiatrist who founded analytic psychology, in some aspects a response to Sigmund Freud’s psychoanalysis. Jung proposed and developed the concepts of the extraverted and the introverted personality, archetypes, and the collective unconscious. His work has been influential in psychiatry and in the study of religion, literature, and related fields. Jung was the son of a philologist and pastor. His childhood was lonely, although enriched by a vivid imagination, and from an early age he observed the behaviour of his parents.