A book by Frater Perdurabo (Aleister Crowley), composed of 93 chapters, each of which may reasonably be considered some sort of magickal riddle. The content of each chapter is related to the chapter's number according to Qabalistic numerology.

The Book of Lies is numbered 333 in the A∴A∴ system of libers. It is also falsely called Breaks.

From an individual student's point of view, the most complete allegorical (is that the word?) explanation of Kabbalah that Crowley wrote. A lot of the other things he put onto paper were motivations, applications, desires and needs as far as magick is concerned, but this is a map. Actually, the chapter that is not a chapter is probably the most concise explanation of Kabbalalistic creation I've ever heard.

As a side note, a lot of this stuff is crazy, very very hard to understand, but if you're interested in Crowley please read The Book of the Law, 4, and 777. As a huge help in understanding Crowley and the Western Mystic Tradition altogether please read anything by Lon Milo DuQuette.