In the West, after Gregory’s death in 604, the surviving correspondence thins to almost nothing. The roads deteriorated. The postal system was gone. Literacy retreated to monasteries. The vast, interconnected world of Roman letter-writing, where a professor in Syria could write to a student in Athens, where a bishop in Africa could argue theology with a scholar in Bethlehem, fell silent in the Western provinces. The Eastern Roman Empire would endure for another eight centuries, but the world Symmachus, Sidonius, and Gregory had known was gone.