Carl Gustav Jung was a Swiss psychologist and psychiatrist who founded Analytical Psychology. Jung proposed and developed the concepts of the extroverted and the introverted personality, archetypes, and the collective unconscious. He coined many of the terms we use today, including: Archetype, Introvert, Extrovert, Individuation, Collective Unconscious, Complex(s), and Typology.
Jung’s friendship with Sigmund Freud ended because of major differences in philosophy and views of the psyche. This separation caused Jung to work hard to articulate his unique thoughts on analysis and the human psyche.
“The decisive question for man is: Is he related to something infinite or not? That is the telling question of his life. Only if we know that the thing which truly matters is the infinite can we avoid fixing our interests upon futilities, and upon all kinds of goals which are not of real importance. … If we understand and feel that here in this life we already have a link with the infinite, desires and attitudes change.”
― C.G. Jung, Memories, Dreams, Reflections