Il 'consigliere celeste' della regina. A proposito dell'astrologia in John Dee

In the early years of the sceintific revolution John Dee (1527-1608), the ' heavenly adviser' of Queen Elisabeth and her court, strives to renew astrology adapting it to the changes that are taking place in the scientific culture. The risult is a new astrological text, the Propaedeumata aphoristica (London 1558) and a new science of heavenly virtues, processed according to the mathematical analysis and experimental research, by analogy with the theory of light. The new theory of astral influences aims to perfect the practice, but ultimately confirms the limits of astrological predictions, evidenced by ptolemy since antiquity. The astrologer will never get a total and definitve control of the dynamics governing the influences of the stars on human life.