In this book it is spoken of the Sephiroth and the Paths; of Spirits and Conjurations; of Gods, Spheres, Planes, and many other things which may or may not exist. It is immaterial whether these exist or not. By doing certain things certain results will follow; students are most earnestly warned against attributing objective reality or philosophic validity to any of them.
Aleister CrowleyThe student, if he attains any success in the following practices, will find himself confronted by things too glorious or dreadful to be described. It is essential that he remain the master of all he beholds, hears or conceives; otherwise he will be the slave of illusion, and the prey of madness.
Aleister Crowley