In Quintiles and Tredeciles, the author explores the little-known 72-degree and 108-degree aspects and explains their cosmic significance in the individual chart. The true meaning of these aspects was said to have been known only to initiates of the Chaldean mysteries. The numerological and astrological relevance of quintiles and tredeciles unfolds in four chapters and a wealth of diagrams and charts. Historical details on the meanings of numbers - taken from numerology; sacred geometry; masonic, religious, and Egyptian symbology; and astrology - transport the reader to times when numbers did not simply designate quantities but were an "extreme reduction of philosophic thought" and "concrete definitions of energetic formative principles of nature." This fascinating work is necessary reading for novice and experienced astrologers and provides a wonderful and tempting introduction to those with a budding interest in astrology and numerology.