Regardie's resonance with the Golden Dawn derived in part from the intuitive knowledge that he demonstrated in his 1932 book, The Tree of Life. With the sponsorship of Dion Fortune, he joined the Stella Matutina in 1933 but quickly became disillusioned with its egotistical leadership and departed less than two years later after attaining the grade of Adeptus Minor. Three years after that, he published his landmark collection The Golden Dawn, making the "secret" rites and teachings of the on-again, off-again Order available to a wider public for the first time, and making possible today's resurgence of interest in the Order. Several years later, Regardie and Crowley parted company after an acrimonious public clash of personalities. Regardie returned to the United States and studied chiropractic medicine in New York. He served in the Army during World War II, and afterward moved to Los Angeles to open a chiropractic clinic and also work as a Reichian therapist. He had studied psychology and psychiatry with several notable teachers and was a strong proponent of Jungian analysis all his life, as well as the more controversial work of Wilhelm Reich. Both writers are known among the 20th century's most unique and controversial psychological theorists, whose writings straddled the border between science, religion and myth, and incorporated a strong element of sexuality. It is easy to see how this emphasis blended well with Regardie's magical and esoteric studies.