Duns, Scotus. Born in 1265. Divine and writer. Residing in Paris, he occupied there the post of head of the theological schools, and was known as the "Subtle Doctor." He was the first to promulgate the doctrine of the Immaculate Conception. At one time a follower of Thomas Aquinas, he later founded a school of his own in antagonism to the system of Aquinas. Died 1308.

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