Magick: In theory and practice By the master therion

“Magick in Theory and Practice” by Aleister Crowley is a foundational text on ceremonial magic and the central work underpinning his religious philosophy of Thelema. Written as a practical guide and theoretical overview, the book explains the principles and techniques of ritual magic. Crowley details the necessary steps for invoking and mastering forces within the scope of magical work. This influential work combines esoteric doctrine with practical exercises, making it essential reading for students of occult practices.