PHIL 20098/30098 Medieval Metaphysics: Universals from Boethius to Ockham
Any language contains terms that apply truly, and in the same sense, to indefinitely many things; for instance, species- or genus-terms, such as hippopotamus or animal. How things admit of such “universal” terms has engaged philosophers ever since Plato, who proposed participation in the forms. In the third century, the Neoplatonist Porphyry wrote an introduction to Aristotle’s Categories, in which he raised, but did not even try to answer, three metaphysical questions: whether genera and species are real or only posited in thoughts; whether, if real, they are bodies or incorporeal; and whether, if real, they are separate entities or belong to sensible things. At the beginning of the medieval period, another Neoplatonic thinker, Boethius, took up Porphyry’s questions. He offered a strict definition of universals, explained the difficulty of the questions, and proposed (without fully subscribing to) what he took to be Aristotle’s way of answering them. Boethius’s treatment oriented the approach to universals by philosophers up through the 12th century. The tools at their disposal, however, were mostly those provided by ancient logical works; and perhaps for this reason, the discussion reached a kind of impasse. But then there appeared translations of numerous hitherto unknown writings of Aristotle and Arab thinkers. Aristotle’s hylomorphism and his doctrine of (what came to be called) abstraction, together with the notion of “common nature” proposed by Avicenna (also a Neoplatonist), seemed to show a way out of the impasse. But they also raised new questions of their own—partly because of their sheer difficulty, and partly because of theological pressures, in the late 1200s, against the standard Aristotelian account of individuation by “matter.” The topic of universals thus tracks various other prominent themes in medieval metaphysics. We will look at background passages in Aristotle and Porphyry, and study texts of some of the most important authors, including Boethius, Abelard, Avicenna, Aquinas, Scotus, and Ockham. (B) (III)
Undergraduates who are not philosophy majors must obtain the instructor’s consent.