Carl Gustav Jung (/jʊŋ/; German: [ˈkarl ˈɡʊstaf jʊŋ]; 26 July 1875 – 6 June 1961), often referred to as C. G. Jung, was a Swiss psychiatrist and psychotherapist who founded analytical psychology.
Jung proposed and developed the concepts of the collective unconscious, archetypes, and extraversion and introversion. His work has been influential not only in psychiatry but also in philosophy, anthropology, archaeology, literature, and religious studies. He was a prolific writer, though many of his works were not published until after his death.
The central concept of analytical psychology is individuation—the psychological process of integrating the opposites, including the conscious with the unconscious, while still maintaining their relative autonomy. Jung considered individuation to be the central process of human development.