Contact with the Byzantine Empire, and with the Islamic world during the Reconquista and the Crusades, allowed Latin Europe access to scientific Greek and Arabic texts, including the works of Aristotle, Ptolemy, Isidore of Miletus, John Philoponus, Jābir ibn Hayyān, al-Khwarizmi, Alhazen, Avicenna, and Averroes. European scholars had access to the translation programs of Raymond of Toledo, who sponsored the 12th century Toledo School of Translators from Arabic to Latin. Later translators like Michael Scotus would learn Arabic in order to study these texts directly. The European universities aided materially in the translation and propagation of these texts and started a new infrastructure which was needed for scientific communities. In fact, European university put many works about the natural world and the study of nature at the center of its curriculum,Huff, Toby. Rise of early modern science 2nd ed. pp. 180–181 with the result that the "medieval university laid far greater emphasis on science than does its modern counterpart and descendent."Grant, Edward. "Science in the Medieval University", in James M. Kittleson and Pamela J. Transue, ed., Rebirth, Reform and Resilience: Universities in Transition, 1300–1700, Ohio State University Press, 1984, p. 68
