  Bonaventure attended lectures and disputations in theology from 1243 to 1248. Writing about 1280, the Franciscan chronicler Salimbene said: “Br. John of Parma [Franciscan Minister General] gave the license to Br. Bonaventure of Bagnoregio to read at Paris, which he had never yet done because he was not yet installed in a Chair. He then read the whole Gospel of St. Luke, a commentary that is very beautiful and complete. This was in  1248.”[4]  This entry refers to Bonaventure’s cursorie lectures as “Bachelor of the Bible,” 1248–1250. From 1250–2 he commented on the Sentences (Sententiae in IV Libris Distinctae). Once Master, he revised the Commentary (Commentaria in Quatuor Libros Sententiarum), his major philosophical and theological work. In 1252–3 he was a “formed Bachelor” of Theology, performing the three duties of a Master: lecturing on the Bible, engaging in disputations, and preaching. In 1253 the Masters and students of the University of Paris went on strike, all but the friars.  The two Dominicans and William of Meliton, O.F.M., continued to teach and refused to take an oath of loyalty to the University corporation, for which they were expelled from the “university of masters,” an action defended by the University in a letter of 4  February.[5]  Bonaventure received the licentia docendi by Easter 1254, in the midst of this conflict. He assumed the Franciscan Chair in theology immediately, but taught only at the Franciscan convent, unrecognized by the University.