(died 1245) Theologian and philosopher. Born in Hales, England; died in Paris. He joined the Franciscans, 1222, and was installed as the first Franciscan teacher of theology in the University of Paris in 1231. He was the earliest of the great 13th-century Schoolmen. Author of the unfinished "Summa Universre Theologire," the first attempted systematic exposition of Catholic doctrine following the introduction into Europe and knowledge of Aristotle's complete works, he gave definite form to the Scholastic method and its application to theology, and outlined the plan later followed by all the great "Summae."