 As the century advanced, the intellectual center moved from Notre Dame to the Left Bank, where the monasteries, which were independent of the Bishop of Paris, began to establish their own schools.One of the most important new schools was established on the left bank at the Abbey of Sainte-Geneviève; its teachers included the scholar Pierre Abelard (1079–1142), who taught five thousand students.Abelard was forced to leave the university because of the scandal caused by his romance with the nun Héloïse.