In his vast collection of writings, notably in his later magnum opus
The City of God, Augustine drew on classical ideas to develop a schema that traced the “six ages of man,” from infancy to old age; he saw these ages corresponding to the ages of the history of the world, a correspondence that readers can detect elsewhere in
Confessions. For now, it’s enough to observe that Augustine’s attention even to the earliest years of his life has classical precedent, even though it doesn’t seem to contain great insight. It also fits with his belief that God’s providence was operating at every stage of his life, long before he acknowledged God for himself.