Carl Gustav Jung was a Swiss psychiatrist and psychologist who established analytical psychology. He wrote extensively, publishing more than twenty books, and contributed illustrations and correspondence throughout his career. Jung is recognized for introducing the concept of archetypes, which has become a key idea in psychology. His theories have had a significant impact on a range of academic fields, including psychiatry, anthropology, archaeology, literature, philosophy, and religious studies. Jung's ideas continue to influence both scholarly research and public understanding of psychology.