Universities developed in the large cities of Europe during this period, and rival clerical orders within the church began to battle for political and intellectual control over these centers of educational life. The two main orders founded in this period were the Franciscans and the Dominicans. The Franciscans were founded by Francis of Assisi in 1209. Their leader in the middle of the century was Bonaventure, a traditionalist who defended the theology of Augustine and the philosophy of Plato, incorporating only a little of Aristotle in with the more neoplatonist elements. Following Anselm, Bonaventure supposed that reason can only discover truth when philosophy is illuminated by religious faith.[26] Other important Franciscan scholastics were Duns Scotus, Peter Auriol and William of Ockham.[27][28]
By contrast, the Dominican order, a teaching order founded by St Dominic in 1215, to propagate and defend Christian doctrine, placed more emphasis on the use of reason and made extensive use of the new Aristotelian sources derived from the East and Moorish Spain. The great representatives of Dominican thinking in this period were Albertus Magnus and (especially) Thomas Aquinas, whose artful synthesis of Greek rationalism and Christian doctrine eventually came to define Catholic philosophy.
Aquinas's masterwork, Summa Theologica (1265–1274), is considered to be the pinnacle of scholastic, medieval, and Christian philosophy.
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