For over a thousand years, the Tetrabiblos held an authority in the astrological world comparable to that of a bible.
Ptolemy's Tetrabiblos : The Foundation of Western Astrology The (Greek for "Four Books"), often referred to by its Latin title Quadripartite , is a seminal work on the philosophy and practice of astrology written by the 2nd-century Alexandrian scholar Claudius Ptolemy . While Ptolemy is perhaps more famous for the Almagest , which provided the mathematical foundation for astronomy, he intended the Tetrabiblos to be its logical companion. Together, they formed a complete system: the Almagest explained the movement of celestial bodies, and the Tetrabiblos explained their supposed influence on the world. The Structure of the "Four Books" Ptolemy's Tetrabiblos, Or Quadripartite
: Here, Ptolemy moves to the individual, discussing factors present at birth that determine physical appearance, temperament, and parental influence. For over a thousand years, the Tetrabiblos held