As a means of recording the passage of time, the 13th century was that century which lasted from 1201 to 1300. In the history of European culture, this period is considered part of the High Middle Ages.
Persian historian Rashid al-Din records eleven Buddhist texts circulating in Arabic translation.
The Thai Kingdom of Sukhothai is established, with Theravada Buddhism as the state religion. Later in the century it vassalises significant parts of modern Thailand, Laos, Burma, and Malaysia.
In the thirteenthcentury intellectual progress, under the guidance of faith, had reached that point where it could be said with truth: "Reason could go no higher; faith could not receive more numerous or stronger arguments from reason to explain and defend her dogmas."
The eleventh century was noted for the disputes on the nature of the Universals, with the Nominalism of Roscelin, the exaggerated Realism of William of Champeaux, and the moderate Realism of St. Anselm, who also established the true principles on which reason should be proceed in her inquiries into the mysteries of revealed religion.
Averroes, the son of an Arabian physician, was born at Cordova, in the beginning of the twelfth century.