In 1904, The Book of the Law declared the advent of a new period in the course of human history - The Aeon of Horus or Aeon of the Child. The doctrine codified in The Book of the Law and the numerous other Holy Books known as Thelema revealed Aleister Crowley as the Prophet of the new Aeon. In this ground-breaking book, author, J. Daniel Gunther, provides a penetrating and cohesive analysis of the spiritual doctrine underlying and informing the Aeon of the Child and the sublime formulae of Initiation encountered by those who would probe its mysteries. Drawing on more than 30 years of experiences as a student and teacher within the Order of the A;. A;. the author examines the doctrinal thread of Thelema in its historical, religious and practical context. This book is written in clear, precise language that will aid those students who seek to navigate the difficult terrain of the spiritual quest. More advanced students will find tantalising clues to serve as guideposts and eventual confirmation of direct experience. The book contains numerous diagrams and detailed references encompassing ancient Egyptian hieroglyphic texts, the Apocrypha, the Old and New Testaments, alchemy, hermetic Qabalah and tarot, as well as the writings of Carl Jung and Aleister Crowley.