Morya is one of the "Masters of the Ancient Wisdom" within modern Theosophical beliefs. He is one of the Mahatmas who inspired the founding of the Theosophical Society and was engaged in a correspondence with two English Theosophists living in India, A. P. Sinnett and A. O. Hume. The correspondence was published in 1923 by A. Trevor Barker, in the book The Mahatma Letters to A. P. Sinnett.
H. P. Blavatsky originally described the existence of a spiritual master whom she considered her guru, and who went by, among other names, Morya. Blavatsky said that Morya and another master, Koot Hoomi, were her primary guides in establishing the Theosophical Society. Blavatsky also wrote that Masters Morya and Koot Hoomi belonged to a group of highly developed humans known to some as the Great White Brotherhood (though this is not how they described themselves). Although Master Morya's personality has been depicted in some detail by various theosophical authors, critics point out that there is little evidence that Blavatsky's Masters, including Morya, ever existed. Author K. Paul Johnson wrote that Blavatsky gave conflicting versions of her meeting with Morya and suggests Blavatsky fictionalized the story, basing it on her encounter with an Italian political activist. Author Paul Zweig writing in the New York Times characterized Blavatsky's claims as fraudulent, saying they were invented "out of whole cloth." Many scholarly reviewers of these books, on the other hand, claim that these and similar books attacking Blavatsky and her claims about the existence of such masters are based on poor quality research, specious arguments, and poorly supported speculation. So, from a scholarly point of view, the existence of such masters is considered by many to still be controversial. From a physical angle, all we have at this time are the personal testimony of a number of individuals, both within and beyond the Theosophical Society, who claim to have physically encountered Morya masters like him.