Ptolemy

The Tetrabiblos of the famous astronomer and geographer Claudius Ptolemaeus (ca. 100–178 CE) of Egypt consists of four books. The title given in some manuscripts means 'Mathematical Treatise in Four Books', while in others it is 'The Prognostics addressed to Syrus'. The subject is astrology, which in Ptolemy's time, and down to the Renaissance, was fused as a respectable science...