in History, Literature

Bedtime Reading

According to Plutarch’s Life of Alexander 8, Alexander the Great slept with a copy of the Iliad (along with his dagger) beneath his pillow. In reading Charles Norris Cochrane’s Christianity and Classical Culture a few minutes ago, I came across the following: “[I]t is recorded that Charlemagne habitually slept with a copy of [Augustine’s City of God] beneath his pillow” (377). This seems to be in imitation of the practice of Alexander, transposed into a Christian key. Does anyone know the source(s) of this claim about Charlemagne?