Mystery is the best word to define the Book of Creation, a brief and ancient booklet of cosmological and cosmogonic speculation of inaccurate origin, difficult to date, unknown author, confusing content, laconic style and dark syntax, perhaps the text most enigmatic of Hebrew literature of all time. However, despite its brevity and the extreme difficulties to understand its message, never so few words had so much power or fascinated so many preclear minds. The Book of Creation is the first known speculative essay of Jewish thought in the Hebrew language and can be considered, therefore, as the conceptual substrate of various systems of Jewish philosophy and mysticism. Few books in Hebrew have exercised, after the closing of the Talmud, such a decisive influence on the development of Jewish thought. As regards specifically the literature of esoteric-mystical speculation, the Book of Creation is a fundamental and indispensable text. As far as the Jewish Kabbalah is concerned, it is a foundational book and for many considered sacred.