Bruno Giordano (1548–1600), Italian speculative philosopher. He was born in Naples, where he entered the Dominican order in 1565. In 1576 he was suspected of heresy and abandoned his order. He studied and taught in Geneva, but left because of difficulties with the Calvinists. Thereafter he studied and taught in Toulouse, Paris, England, various German universities, and Prague. In 1591 he rashly returned to Venice, and was arrested by the Venetian Inquisition in 1592. In 1593 he was handed over to the Roman Inquisition, which burned him to death as a heretic.
Because of his unhappy end, his support for the Copernican heliocentric hypothesis, and his pronounced anti-Aristotelianism, Bruno has been mistakenly seen as the proponent of a scientific worldview against medieval obscurantism. In fact, he should be interpreted in the context of Renaissance hermetism. Indeed, Bruno was so impressed by the hermetic corpus, a body of writings attributed to the mythical Egyptian sage Hermes Trismegistus, that he called for a return to the magical religion of the Egyptians. He was also strongly influenced by Lull, Nicholas of Cusa, Ficino, and Agrippa von Nettesheim, an early sixteenth-century author of an influential treatise on magic. Several of Bruno’s works were devoted to magic, and it plays an important role in his books on the art of memory. Techniques for improving the memory had long been a subject of discussion, but he linked them with the notion that one could so imprint images of the universe on the mind as to achieve special knowledge of divine realities and the magic powers associated with such knowledge. He emphasized the importance of the imagination as a cognitive power, since it brings us into contact with the divine. Nonetheless, he also held that human ideas are mere shadows of divine ideas, and that God is transcendent and hence incomprehensible. Bruno’s best-known works are the Italian dialogues he wrote while in England, including the following, all published in 1584: The Ash Wednesday Supper; On Cause, Principle and Unity; The Expulsion of the Triumphant Beast; and On the Infinite Universe and Worlds. He presents a vision of the universe as a living and infinitely extended unity containing innumerable worlds, each of which is like a great animal with a life of its own. He maintained the unity of matter with universal form or the World-Soul, thus suggesting a kind of pantheism attractive to later German idealists, such as Schelling. However, he never identified the World-Soul with God, who remained separate from matter and form. He combined his speculative philosophy of nature with the recommendation of a new naturalistic ethics. Bruno’s support of Copernicus in The Ash Wednesday Supper was related to his belief that a living earth must move, and he specifically rejected any appeal to mere mathematics to prove cosmological hypotheses. In later work he described the monad as a living version of the Democritean atom. Despite some obvious parallels with both Spinoza and Leibniz, he seems not to have had much direct influence on seventeenth-century thinkers. E.J.A.
