One Truth and One Spirit is a new book by Keith Readdy being published November 1. It’s Amazon Page states:
“Based upon academic research at the University of Amsterdam’s Center for the History of Hermetic Philosophy and Related Currents, One Truth and One Spirit is a much-needed work that covers a previously unexplored history of the modern religious movement known as Thelema. This work details the theoretical framework of Aleister Crowley’s spiritual legacy in the O.T.O. and the A?A? and covers the years of Thelema since Crowley’s death in 1947.
“One Truth and One Spirit approaches a complex topic with a complex history, with exhaustive citations and sources, but it is written for anyone interested in the subject of Thelema. The author utilizes published source material as well as previously unavailable information, which makes this a unique contribution to the available literature.
“One Truth and One Spirit is expected to be of interest to the novice, the scholar, and the seasoned practitioner of Thelema. The work provides a general historical overview of Thelema from a theoretical vantage point, explores the historical development of the movement from the 1960s to the 1990s, and applies the author’s own critical discussions on the topic itself.”
Occult author Richard Kaczynski had this to say about it:
“Keith Readdy has alchemically united his passion for Aleister Crowley’s A.’.A.’. and O.T.O. with his academic training in Western esotericism. He tackles the thorny question of whether Thelema is a religion, a spirituality or a philosophy. He summarizes the evolution of Thelemic doctrine in the teachings of both Crowley and modern-day exponents like J. Daniel Gunther and Fratres Shiva and Phanes. He recounts the convoluted history of Thelema since Crowley’s death—no easy feat! And he analyzes the role of publishing as *the* vehicle for preserving and promulgating the message of Aleister Crowley as the prophet of Thelema. It’s rare for a book to offer something for everyone, but One Truth and One Spirit packs in so many thought-provoking details that anyone with an interest in Aleister Crowley or Thelema will encounter valuable insights throughout its pages.”