Giordano Bruno (1548 – 17 February 1600), born Filippo Bruno, was an Italian Dominican friar, philosopher, mathematician, poet, and astrologer. He is celebrated for his cosmological theories, which went even further than the then novel Copernican model. He proposed that the stars were just distant suns surrounded by their own exoplanets and raised the possibility that these planets could even foster life of their own (a philosophical position known as cosmic pluralism). He also insisted that the universe is in fact infinite and could have no celestial body at its “center”.
Beginning in 1593, Bruno was tried for heresy by the Roman Inquisition on charges including denial of several core Catholic doctrines (including the Trinity, the divinity of Christ, the virginity of Mary, and Transubstantiation). Bruno’s pantheism was also a matter of grave concern.The Inquisition found him guilty, and in 1600 he was burned at the stake in Rome’s Campo de’ Fiori. After his death he gained considerable fame, being particularly celebrated by 19th- and early 20th-century commentators who regarded him as a martyr for science,although historians have debated the extent to which his heresy trial was a response to his astronomical views or to other aspects of his philosophy and theology.Bruno’s case is still considered a landmark in the history of free thought and the emerging sciences.
During his time in Naples he became known for his skill with the art of memory and on one occasion traveled to Rome to demonstrate his mnemonic system before Pope Pius V and Cardinal Rebiba. In his later years Bruno claimed that the Pope accepted his dedication to him of the lost work On The Ark of Noah at this time.
In addition to cosmology, Bruno also wrote extensively on the art of memory, a loosely organized group of mnemonic techniques and principles. Historian Frances Yates argues that Bruno was deeply influenced by Arab astrology, Neoplatonism, Renaissance Hermeticism, and legends surrounding the Egyptian god Thoth.