C.G. Jung (1875–1961) was a Swiss psychiatrist and psychoanalyst who founded analytical psychology. His work explored the depths of the human psyche, introducing concepts such as the collective unconscious, archetypes, and psychological types, which greatly influenced the field of psychology and psychotherapy. Jung's theories extended beyond the confines of traditional science into the realms of spirituality and mysticism, integrating insights from Eastern and Western traditions. His groundbreaking book, "Psychological Types," laid the foundation for the widely-used Myers-Briggs Type Indicator. Jung's profound influence continues in modern psychology, as his ideas resonate in various disciplines, including art, literature, and religious studies.