1937. The Amazing Secrets of the Yogi is not an exhaustive treatise on all aspects of Yogi philosophy, but it is sufficiently comprehensive to satisfy those who desire a knowledge of the main trend of Yogi thinking. The knowledge here given is sufficient for all those who desire to become adepts. The Gateway to Prosperity is a practical training guide for Western people, written by the only white Yogi, who is the foremost European exponent of the physical and mental processes of the Yoga philosophy.