 He wrote short notes or "Postillæ" on the entire Bible, and set forth the literal meaning with great ability, especially of the books written in Hebrew.This work was most popular, and in frequent use during the late Middle Ages, and Martin Luther was indebted to it.A great impulse was given to exegetical studies by the Council of Vienne which decreed, in 1311, that chairs of Hebrew, Chaldean, and Arabic should be established at Paris, Oxford, Bologna, and Salamanca.