The world-famous psychiatrist and pioneer of the unconscious, Carl Gustav Jung, never produced a systematic treatment of his own work - he was always moving forward. And so it became the life-task of his assistant-of-many-decades, Carl Alfred Meier, to gather and present in detail the various aspects of his far-reaching discoveries. This final volume of Meier's work addresses the human personality in its encounters between consciousness and the unconscious, a process referred to as individuation. In describing such encounters, the author extensively explains the idea of Jung's psychological types.