Do what thou wilt shall be the whole of the Law." This oft-misunderstood phrase, which forms the basis for Crowley's practice of Magick, is found in The Book of the Law. Dictated to Crowley in Cairo between noon and 1 pm on three success days in April 1904, the Book of the Law is the source book and key for Crowley students and for the occult in general. For the first time the Book of the Law is offered in a deluxe, hardcover edition fittingly issued in celebration of the 100th anniversary of Liber AL vel Legis's transmission to Crowley.