I recently acquired the Thoth Tarot deck. The Thoth Tarot was designed by Aleister Crowley and the paintings for the cards were done by Lady Frieda Harris. The creation of the deck was completed in 1943, and in 1944, Crowley published The Book of Thoth which is contains in-depth explanations of the symbolism included in each of the tarot cards, as well as the correspondences between the Thoth deck and the kabbalistic Tree of Life.
Crowley begins the book with a basic description of the tarot deck.
The tarot is a pack of seventy-eight cards. There are four suits, as in modern playing cards, which are derived from it. But the Court cards number four instead of three. In addition, there are twenty-two cards called “Trumps”, each of which is a symbolic picture with a title to itself.
At first sight one would suppose this arrangement to be arbitrary, but it is not. It is necessitated, as will appear later, by the structure of the universe, and in particular the Solar System, as symbolized by the Holy Qabalah.(p. 3)
Because of its correspondences to the Universe and the Tree of Life, Crowley stresses that the study of the tarot is invaluable in magickal studies and should be started early and practiced regularly.
This fact is to be emphasized, because one must not take the Tree of Life as a dead fixed formula. It is in a sense an eternal pattern of the Universe, just because it is infinitely elastic; and it is to be used as an instrument in one’s researches into Nature and her forces. It is not to be made an excuse for Dogmatism. The Tarot should be learnt as early in life as possible; a fulcrum for memory and a schema for mind. It should be studied constantly, a daily exercise; for it is universally elastic, and grows in proportion to the use intelligently made of it. Thus it becomes a most ingenious and excellent method of appreciating the whole of Existence.(p. 31)
Although there are many levels of correspondences and symbolism associated with the tarot, Crowley emphasizes the correspondence between the twenty-two trump cards and the twenty-two paths which are part of the Tree of Life according to the Holy Qabalah.
Twenty-two is the number of letters of the Hebrew alphabet. It is the number of Paths of the Sepher Yetzirah. These paths are the paths which join the ten numbers on the figure called the Tree of Life.
Why are there twenty-two of them? Because that is the number of the letters of the Hebrew alphabet, and one letter goes to each path.(p. 35)
The bulk of the book deals with the symbolism incorporated into each individual card within the Thoth Tarot deck. This information is extremely useful to anyone who wants to use this tarot deck, but is way too detailed to cover in a blog post. I will only say that if you have the Thoth Tarot or are thinking of acquiring the deck, you should also invest in this book.
A final word about this text. It demands a lot of the reader and expects that you have at least a basic understanding of kabbalah, tarot, and ancient mythology. I would not suggest this as a beginner’s guide.