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Revision as of 01:39, 18 December 2009
Guido Bonatti from Forlì (d. between 1296 and 1300) was a famous Italian astronomer and astrologer. He was the most celebrated astrologer in Europe in his century.
His dates of birth and death are unknown, the latter probably occurring between 1296 and 1300. In 1233 he is known as the winner of a dispute in Bologna with the friar Giovanni Schio from Vicenza, who maintained the non-scientificity of astrology. He was very much interested in astronomy and astrology.
He was advisor of Frederick II, Holy Roman Emperor, Ezzelino da Romano III, Guido Novello da Polenta and Guido I da Montefeltro.
He served also the communal governments of Florence, Siena and Forlì.
His book Liber Astronomiae, or Book of Astronomy, written around 1277, was reputed "the most important astrological work produced in Latin in the 13th century" (Lynn Thorndike). It influenced astrologers for centuries, and was translated for the first time into English by Dr. Benjamin Dykes in 2007.
He also appears in Dante's Divine Comedy, where he is in hell as punishment for his astrology. The episode cited is the victorious defence of Forlì against the Papal French troops sent by Pope Martin IV.
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External links
- "Translation of Bonatti's Book of Astronomy"
- The Life of Guido Bonatti
- "Astrology courses based upon Bonatti's work"