The lessons which compose this volume originally appeared in monthly form, the first of which was issued in October, 1907, and the twelfth in September, 1908. These lessons met with a hearty and generous response from the public, and the present volume is issued in response to the demand for the lessons in a permanent and durable form. There has been no change in the text. Includes a new introduction by Karl Wurf.

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 also known to have been the author of the pseudonymous works attributed to Theron Q. Dumont and Yogi Ramacharaka.