He also wrote about the immoral life of the students at the University of Paris and the holy life of the Beguines of Liège, in particular his Life of Marie d'Oignies, whose advice inspired him to become a canon regular.
Tamén escribiu sobre a vida inmoral dos estudantes da Universidade de París e a vida santa das beguinas de Liexa, en particular a súa Vida de Marie d'Oignies, cuxo consello inspirouno a facerse cóengo regular.