References in his commentary on Isaiah suggest that he had earlier received training in medicine.
Sometime between 1233 and 1235 he became master of theology at the Dominican Collège de Saint-Jacques attached to the University of Paris.
Among his colleagues were Hugh of Saint-Cher and Geoffrey of Bléneau; among his probable students, Albert the Great.
Besides Isaiah, he wrote commentaries on Job, Proverbs, Ecclesiastes, Song of Songs, Sirach, Wisdom, Ezekiel, Luke, John, Acts, all twelve Minor Prophets and all of the traditional Pauline epistles.
[3] Besides his exegetical works, he also wrote one of the earliest quodlibeta, Quaestiones de quolibet, which has been edited and published, and also a commentary on Peter Lombard's Sentences.