"The task of unveiling the hidden truth demands some knowledge of Cosmogenesis, of the emanation of the Universe from the Absolute, the finite from the Infinite, and of the successive cycles, major and minor, of involution and evolution. In addition, both knowledge of the Symbolical Language, its purposes, methods and classical symbols, and the faculty of analysing and interpreting historical metaphors, are necessary to open the casket containing the treasures of concealed wisdom—the Holy Bible itself."