 By about 1200, the Paris schools had become a university, and at much the same time a university developed at Oxford. Universities were split into Arts Faculties and the higher Faculties of Theology, Law and  Medicine.[18]  Arts Faculties had by far the most students, and those who studied the higher disciplines were older and had usually been trained in the Arts Faculty or its equivalent. Grammar and logic were studied there from the beginning, but, as translations of the complete Aristotle gradually became available in the course of the thirteenth century, after some decades of ecclesiastical opposition, Arts Faculties became in effect Aristotelian Faculties, with the curriculum divided up according to his texts. Although universities were under the aegis of the Church, study in the Arts Faculties was supposed to be limited to natural knowledge, of which Aristotle, a pagan, was considered by almost all to be the supreme representative. Discussion of revealed truth—in a highly argumentative manner, with many purely philosophical digressions—took place in the Theology Faculties, which quickly came to be dominated by Franciscan and Dominican friars.