This is the second book on the Kabbalah by Elias Gewurz, the other being Hidden Treasures of the Ancient Qabalah. Written from a Theosophical viewpoint, this thin volume has a lot more Kabbalah content than the previous one. Gewurz explains 'signatures' of each Hebrew letter, the use of techniques such as permutation and numerology to find deeper meaning in the sacred writings, and the history and bibliography of Jewish mysticism.