Duns Scotus (1266–1308)
Born 1266 CE, died 1308 CE.
John Duns Scotus ( dunz SKOH-təs; Ecclesiastical Latin: [duns ˈskɔtus], 'Duns the Scot'; c. 1265/66 – 8 November 1308) was a Scottish Catholic priest and Franciscan friar, university professor, philosopher and theologian. He is considered among the most important philosopher-theologians in Western Christendom during the last part of the medieval period, together with Thomas Aquinas, Bonaventure and William of Ockham. Duns Scotus has had considerable influence on both Catholic and secular thought. The doctrines for which he is best known are the "univocity of being", that existence is the most abstract concept we have, applicable to everything that exists; the formal distinction, a way of distinguishing between different formalities of the same thing; and the idea of haecceity, the property supposed to be in each individual thing that makes it an individual (i.e., a certain "thisness"). Duns Scotus also developed a complex argument for the existence of God, and argued for the Immaculate Conception of Mary.
Text from the Wikipedia article Duns_Scotus, licensed CC BY-SA 4.0.