Eric Purdue, a translator, author, and practitioner of medieval astrology, discusses the history of astrology, different types of astrological operations, and debunks misconceptions. He explores the origins and development of astrology, highlighting its evolution during the Hellenistic period. The podcast also covers the revival and decline of astrology in Europe, the influence of the moon in astrology, book recommendations, the distinction between signs and constellations, and the magical worldview of 'On the Stellar Rays' by Al Kindie.