 He also wrote a commentary on the Constitution "Pastor bonus" of Benedict XII; "Speculum Monachorum"; "De Signis locutionum"; "Notæ in Damasi Pontificale" (an annotated copy of the "Liber Pontificalis", likewise dedicated to Charles V); and began at Rouen in 1379 a treatise on the question of calling a general council with a view to ending the schism then distracting the Church.This treatise remained unfinished.With the exception of "In Regulam S.P.