Because the shepherds are persons of humble state, do not esteem lightly the testimony of their faith. For the more humble the testimony appears to human wisdom, the more precious is it to the eyes of faith. For the Lord did not seek out the schools of learning, filled with the wise, but the simple people, who would not know how to twist, to colour, what they learned; for He sought not ambition, it was simplicity He looked for.
St. Ambrose of Milan
"The Beginning of the Church"