Mr. Gray presents a home-study course in four volume that revives the instrumentality inherent in our western tradition. The series makes available to us, in our own cultural symbolism, a way to enlightenment that we can practice on a daily basis.
Volume 1, Western Inner Workings, provides a practical framework for the western student's development. Each day includes a morning meditation, a mid-day invocation, evening exercises, and a sleep subject. Incorporating symbols that are "close to home," these rituals increase consciousness in comfortable increments.
William G. Gray, better known to many as Bill Gray, was an English ceremonial magician, Hermetic Qabalist and writer, who published widely on the subject of western esotericism and the occult. Gray founded a magical order known as the Sangreal Sodality.
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This is another excellent by William G. Gray that explores the inner workings of Western Mystery traditions. It's as comprehensive book that explores a number of salient issues, such as sacred kingship, the function of ceremonial tools, mediation and ties all of them together in a way that enables the reader to go deep with Western Mystery traditions, while also developing their own cosmological models. I've found this book to be very useful in some of my own ongoing work and would recommend it as well as Gray's other books to anyone serious about developing their magical practice.