The theological and philosophical systems that were studied in both Christian and Judaic schools in Europe in the medieval period. Scholasticism sought to integrate biblical teaching with Platonic and Aristotelian philosophy. John Scotus (Erigena) is regarded as the founder, but the succession of `schoolmen', as scholastic philosophers were called, opened with Roscellinus at the end of the 11th century, when as a supporter of nominalism he was countered by Anselm, the champion of realism. The controversy over universals thus begun continued for several centuries. William of Champeaux, Abelard, the English monk Alexander of Hales (died 1222), Albertus Magnus, and Peter Lombard played prominent parts, but more significant were Thomas Aquinas, whose writings became the classical textbooks of Catholic doctrine, and the Franciscan Duns Scotus. In the late 12th century the Spanish philosopher Moses Maimonides published a work that helped to introduce Europe to an integrated approach to Aristotle. The last major scholastic philosopher was William of Occam, who, in the first half of the 14th century, restated nominalism. In the 20th century there has been a revival of interest in scholasticism, in the writings of Jacques Maritian (1882-1973) and other Catholic scholars.