(also known as Liber 963 ) is a seminal occult text focused on self-transformation through structured meditation and ceremonial adoration. Although attributed to Crowley, the primary text was composed by his disciple, Major General J.F.C. Fuller. Key Concepts and Structure

: The core of the work consists of poetic hymns and meditations centered on the twelve signs of the Zodiac, the Sun, and the Moon.

: Provides context in the foreword of recent editions.

: It emphasizes "inflaming oneself in prayer" as a method to achieve mystical states. Notable Contributors to Modern Editions