Carl Gustav Jung was a Swiss psychiatrist, psychotherapist, and psychologist who founded the school of analytical psychology. He was a prolific author of over twenty books, illustrator, and correspondent, and academic, best known for his concept of archetypes. Widely considered one of the most influential psychologists of the early 20th century, and of all time, Jung's work has fostered not only scholarship, but also popular interest. His work has been influential in the fields of psychiatry, anthropology, archaeology, literature, philosophy, psychology, and religious studies.