Patanjali was a compiler of teaching which, up to the time of his advent, had been given orally for many centuries.... The Yoga Sutras are the basic teaching of the Trans Himalayan School to which many of the Masters of the Wisdom belong, and many students hold that the Essenes and other schools of mystical training and thought, closely connected with the founder of Christianity and the early Christians, are based upon the same system... the Sutras have [xvi] been dictated and paraphrased by the Tibetan Brother and the commentary upon them has been written by myself, and subjected to revision and comment by the Tibetan.