Crowley said that a mystical experience in 1904, while on holiday in
Cairo, Egypt, led to his founding of the
religious philosophy known as
Thelema. Aleister's wife
Rose started to behave in an odd way, and this led him to think that some entity had made contact with her. At her instructions, he performed an invocation of the Egyptian god
Horus on
March 20 with (he wrote) "great success." According to Crowley, the god told him that a new magical
Aeon had begun, and that Crowley would serve as its prophet. Rose continued to give information, telling Crowley in detailed terms to await a further revelation. On
8 April and for the following two days at exactly noon he allegedly heard a voice, dictating the words of the text,
Liber AL vel Legis, or
The Book of the Law, which Crowley wrote down. The voice claimed to be that of
Aiwass (or Aiwaz) "the minister of Hoor-paar-kraat", or Horus, the god of force and fire, child of
Isis and Osiris and self-appointed conquering lord of the New Aeon, announced through his chosen scribe "the prince-priest the Beast" (For citations, see main article
The Book of the Law).
Portions of the book are in numerical
cipher, which Crowley claimed the inability to decode (Setian
Michael Aquino later claimed to be able to decode them). Thelemic dogma explains this by pointing to a warning within the
Book of the Law — the speaker supposedly warned that the scribe,
Ankh-af-na-khonsu (Aleister Crowley), was never to attempt to decode the ciphers, for to do so would end only in folly. The later-written
The Law is For All sees Crowley warning everyone not to discuss the writing amongst fellow critics, for fear that a
dogmatic position would arise. While he declared a "new Equinox of the Gods" in early 1904, supposedly passing on the revelation of
March 20 to the occult community, it took years for Crowley to fully accept the writing of the
Book of the Law and follow its doctrine. Only after countless attempts to test its writings did he come to embrace them as the official doctrine of the New Aeon of Horus. The remainder of his professional and personal careers were spent expanding the new frontiers of scientific
illuminism.
Rose and Aleister had a daughter, whom Crowley named Nicole Ma Ahathoor Hecate Sappho Jezebel Lilith Crowley, in July of 1904. This child died in 1906, during the two and a half months when Crowley had left her with Rose (after a family trip through China). They had another daughter, Lola Zaza, in the summer of that year, and Crowley devised a special ritual of thanksgiving for her birth.
He performed a thanksgiving ritual before his first claimed success in what he called the "Abramelin operation", on
9 October 1906. This was his implementation of a magical work described in
The Book of the Sacred Magic of Abramelin the Mage. The events of that year gave the Abramelin book a central role in Crowley's system. He described the primary goal of the "
Great Work" using a term from this book: "the Knowledge and Conversation of the
Holy Guardian Angel". An essay in the first number of
The Equinox gives several reasons for this choice of names:
# Because Abramelin's system is so simple and effective.
# Because since all theories of the universe are absurd it is better to talk in the language of one which is patently absurd, so as to mortify the metaphysical man.
# Because a child can understand it.
Crowley was notorious in his lifetime — a frequent target of attacks in the
tabloid press, which labelled him "The Wickedest Man in the World" to his evident amusement. At one point, he was expelled from
Italy after having established a
commune, the organization of which was based on his personal philosophies, the
Abbey of Thelema, at
Cefalù, Sicily.
Aleister and Rose were divorced in 1909.