Vettius Valens’ Longitudes (1.18), Balbillus, and the Illusion of Astrology’s Self-sufficiency

Cristian Tolsa

Abstract


Valens’ simple methods for the computing the planetary positions along the zodiac probably derive from Balbillus; inadequate, they are meant both to promise beginners an easy start and to claim superiority over the elaborate tools of astronomy.

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