Book of the Law by Aleister Crowley

The Book of the Law is a central text of Thelema, the religious and magical philosophy associated with Aleister Crowley. Its distinctive language and declarations have made it a key work for readers studying his thought.

Crowley said he received the text in Cairo in 1904 from an entity called Aiwass. That origin story belongs to his account and to Thelemic belief, rather than being an independently established supernatural event.