Firmicus Maternus was one of the last astrological writers of Late Antiquity (330s AD), during the rich period of early Neoplatonism and the rise of Christian emperors. Drawing on some of the earliest and most renowned Hellenistic astrologers, such as Nechepsō-Petosiris, Asclepius, and less known figures like Abraham, Firmicus is one of our most important sources of ancient astrological doctrine. Much of the Mathēsis is found nowhere...