Besides the above works and a commentary against various sects of Monophysites (Severans, Theodosians, Cainites and Acephali) he left eleven discourses in defence of Pope Leo I and the Council of Chalcedon, also a work against the Agnoetae, submitted by him before publication to Pope Gregory I, who after some observations authorized it unchanged. With exception of one sermon and a few fragments, all the writings of Eulogius have perished.[1]