 Thomas of Cantimpré attributes this idea to the theologian Simon de Tournai (or Simon de Tornaco, as Thomas calls him), a master of theology at the University of Paris who, according to him, deserved (for having said that) an epileptic crisis that made him mute.Thomas of Cantimpré is also the author of various hagiographic texts, for which he is considered one of the first great authors of mystical hagiography.With the exception of "Vita Joannis abbatis primi monasterii Cantimpratensis" – composed between 1224 and 1228 and relating to the founder and first abbot of the abbey of Cantimpré – Thomas writes mystical biographies on holy females, all linked to the Belgian territory.