William Walker Atkinson (1862 -1932) was an attorney, merchant, publisher, and author, as well as an occultist and an American pioneer of the New Thought movement. He is the author of the pseudonymous works attributed to Theron Q. Dumont, Yogi Ramacharaka and many more, because Atkinson ran his own publishing companies "Advanced Thought Publishing"" and the ""Yogi Publication Society"" and is known to have used an unusually large number of pseudonyms."