Crowley receives the Book of the Law and founds Thelema
In Cairo, Aleister Crowley claims a spirit dictated to him the Book of the Law, founding the religion of Thelema with its creed 'Do what thou wilt shall be the whole of the Law'. It became the fountainhead of much of modern Western occultism.
such as have obtained since the Spring of 1904, e.v.
Magick in Theory and Practice , p. 16-18