Giordano Bruno
Giordano Bruno (/ dʒ ɔːr ˈ d ɑː n oʊ ˈ b r uː n oʊ /; Italian:; Latin: Iordanus Brunus Nolanus; born Filippo Bruno, January or February 1548 – 17 February 1600) was an Italian philosopher, poet, alchemist, astronomer, cosmological theorist, and esotericist. He is known for his cosmological theories, which conceptually extended to include the then-novel Copernican model. He practiced Hermeticism and gave a mystical stance to exploring the universe. He proposed that the stars were distant suns surrounded by their own planets (exoplanets), and he raised the possibility that these planets might foster life of their own, a cosmological position known as cosmic pluralism. He also insisted that the universe is infinite and could have no center.

Bruno was tried for heresy by the Roman Inquisition on charges of denial of several core Catholic doctrines, including eternal damnation, the Trinity, the divinity of Christ, the virginity of Mary, and transubstantiation. Bruno's pantheism was not taken lightly by the church, nor was his teaching of metempsychosis regarding the reincarnation of the soul. The Inquisition found him guilty, and he was burned alive at the stake in Rome's Campo de' Fiori in 1600. 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. Some historians are of the opinion his heresy trial was not a response to his cosmological views but rather a response to his religious and afterlife views, while others find the main reason for Bruno's death was indeed his cosmological views. Bruno's case is still considered a landmark in the history of free thought and the emerging sciences.

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 the presocratic Empedocles, Neoplatonism, Renaissance Hermeticism, and Book of Genesis -like legends surrounding the Hellenistic conception of Hermes Trismegistus. Other studies of Bruno have focused on his qualitative approach to mathematics and his application of the spatial concepts of geometry to language.
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