“According to the Kabbalistic tradition, God created the world with the holy language Hebrew. The Sefer Yetizrah (The Book of Formation), the very first Kabbalistic text, describes this process and mentions that gates—two letter combinations of Hebrew letters—are a central ingredient in the construction of the universe.”

“According to Eliphas Levi, the three greatest books of Qabbalism are the Sepher Yetzirah, The Book of Formation; the Sepher ha Zohar, The Book of Splendor; and the Apocalypse, The Book of Revelation. The dates of the writing of these books are by no means thoroughly established. Qabbalists declare that the Sepher Yetzirah was written by Abraham. Although it is by far the oldest of the Qabbalistic books, it was probably from the pen of the Rabbi Akiba, A.D. 120.”

– Manly P. Hall, The Secret Teachings of All Ages

“…the Sepher Yetzirah marvelously describes all the splendors of the world and the extraordinary play of the Sephiroth within God and the human being through the thirty two paths of Wisdom.”

– Samael Aun Weor, Alchemy & Kabbalah