Thomas Aquinas: Summa Theologiae(1266–1273)
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 John XXII canonized Aquinas as a saint and gave him the title “Angelic Doctor” in 1323....
Thomas Aquinas holding a copy of the ”Summa theologia“ (Library of Congress)View Full Size