Thomas Aquinas: Summa Theologiae


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Recognized as the authoritative expression of conceptualism, the Summa’s system of thought became appropriately known as Thomism. From the early fourteenth century onward, Thomism became one of several competing forms of Christian philosophy, alongside the realist Augustinianism (named after the early theological giant Augustine of Hippo [354–430]), the quasi-nominalism of John Duns Scotus (ca. 1266–1308), and the nominalism of William of Ockham (ca. 1280/88–1348/49). Accordingly, Pope...