"Readers of the Bhagavad Gita will also remember the teaching of love and devotion with which it is filled. The Bodhisattva also occupied occasionally the body of Tsong-ka-pa, the great Tibetan religious reformer, and throughout the centuries he has sent forth a stream of His pupils, including Nagarjuna, Aryasanga, Ramanujacharya, Madhavacharya, and many others, who founded new sects or threw new light upon the mysteries of religion, and among these was one of His pupils who was sent to found the Muhammadan faith. The sending out of the teachers I have mentioned above is only part of His work, which is not confined to humanity, but includes the education of all creatures on earth, and among them the Deva evolution. He is thus the Head of all the faiths at present existing, and of many others which have died out in the course of time, though He is of course responsible for them only in their original form, and not for the corruption which man has naturally and inevitably introduced into all of them as the ages have rolled by. He varies the type of religion to suit the period of the world’s history at which it is put forth, and the people to whom it is given; but though the form may vary as evolution proceeds, the ethics are ever the same."