Tetrabiblos: THE QUADRIPARTITE MATHEMATICAL TREATISE By Claudius Ptolemy, 2nd century CE
ⓘ Read the full text of Tetrabiblos: THE QUADRIPARTITE MATHEMATICAL TREATISE online for free. Written in the 2nd century CE, this ancient astrology work lays the foundation for Western astrology, detailing the influence of celestial bodies on earthly events and human affairs.
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