The Heart of the Master by Aleister Crowley

The Heart of the Master is a key visionary text by Aleister Crowley, written in Tunisia, proclaiming the dawn of the Aeon of Horus, a new spiritual age of Force and Fire, with himself as its prophet, the Beast 666. Divided into three parts—The Vision, The Voice, and The Temple of Truth—it details apocalyptic destruction of the old world, offers poetic explanations of the Qabalistic Tree of Life (with Tarot illustrations), and lists historical spiritual leaders guiding humanity, culminating in Crowley's own role in establishing Thelema.