Giordano Bruno, born Filippo Bruno (1548 – February 17, 1600), was an Italian philosopher best-known as a proponent of heliocentrism and the infinity of the universe. In addition to his cosmological writings, he also wrote extensive works on the art of memory, a loosely-organized group of mnemonic techniques and principles. He is often considered an early martyr for modern scientific ideas, in part because he was burned at the stake as a heretic by the Roman Inquisition. However, some argue that his actual heresy was his pantheist beliefs about God, not an idea that would be characterized today as scientific.
More recent assessments, beginning with the pioneering work of Frances Yates, suggest that Bruno was deeply influenced by magical views of the universe inherited from Arab astrological magic, Neoplatonism and Renaissance Hermeticism. Other recent studies of Bruno have focused on his qualitative approach to mathematics and his application of the spatial paradigms of geometry to language.