Scotsman supposedly was told to go to Tibet by a a vision. Upon doing so was led to the "masters" who trained him in the occult arts and gave him a mission to spread the truth to the west. Around 1930-50. Wrote many books and gave lectures all over the world which his lectures are still on tape. Books were, "Yoga of the Christ" and the sequel "beyond the Himalayas" They were written about his journey and teachings in Tibet. I have listened to most of the recordings and read the 2 books. I must say they were really helpful in opening up my mind to how we are conditioned by our perceptions and how the human physce works earlier in my "Awakening" There is a chapter called "black sun" in David's book "the Biggest Secret" it briefly mentions some things about the "masters" in Tibet and the theosophical society and Alister Crowley.