We are not sent to proclaim ourselves or our personal opinions, but the mystery of Christ and, in him, the measure of true humanism. We are not charged to utter many words, but to echo and bear the message of a single "Word," the Word of God made flesh for our salvation. Consequently, these words of Jesus also apply to us: "My doctrine is not my own; it comes from him who sent me" (John 7:16).
Pope Benedict XVI in his Address to the clergy of Rome
May 13, 2005