The importance of Aristotelianism during the Renaissance is one of the points most emphasized in the past twenty years by American historians. In the Faculties of Arts, professors were obliged to illustrate Aristotelian texts and commentaries; but, of course, they did not subscribe to all of the original doctrines of Aristotle: so Van Steenberghen, Kristeller and C. B. Schmitt consider most of them, above all Pietro Pomponazzi , as »eclectics«. Having emerged unscathed from the dispute on his treatise »De immortalitate (...) animae« and on its apologies, Pomponazzi circulated two handwritten treatises which were even more subversive of orthodox beliefs on fate and on the natural causes of prodigies and incantations. From a Stoic point of view and thanks to his readings of Bessarion, Ficino and Giovanni Pico, he analyzed the Neoplatonic theses on chance and determinism, astrology and magic, and the position of man in the universe. His late treatises deal with these questions. (shrink)