Activity by Cyril of Alexandria ( 376–444) brought fire to almost all the writings of Nestorius (386–450) shortly after 435. 'The writings of Nestorius were originally very numerous', however, they were not part of the Nestorian or Oriental theological curriculum until the mid-sixth century, unlike those of his teacher Theodore of Mopsuestia, and those of Diodorus of Tarsus, even then they were not key texts, so relatively few survive intact, cf. Baum, Wilhelm and Dietmar W. Winkler. 2003. The Church of the East: A Concise History. London: Routledge.
