"God challenges us and our freedom"

Here is Pope Benedict XVI's "urbi et orbi" Christmas address.  A bit:

. . . In the millennium just past, and especially in the last centuries, immense progress was made in the areas of technology and science. Today we can dispose of vast material resources. But the men and women in our technological age risk becoming victims of their own intellectual and technical achievements, ending up in spiritual barrenness and emptiness of heart. That is why it is so important for us to open our minds and hearts to the Birth of Christ, this event of salvation which can give new hope to the life of each human being.

Wake up, O man! For your sake God became man" (St. Augustine, "Sermo," 185). Wake up, O men and women of the third millennium! At Christmas, the Almighty becomes a child and asks for our help and protection. His way of showing that he is God challenges our way of being human. By knocking at our door, he challenges us and our freedom; he calls us to examine how we understand and live our lives.

The modern age is often seen as an awakening of reason from its slumbers, humanity's enlightenment after an age of darkness. Yet without the light of Christ, the light of reason is not sufficient to enlighten humanity and the world. For this reason, the words of the Christmas Gospel: "the true Light that enlightens every man was coming into this world" (John 1:9) resound now more than ever as a proclamation of salvation. "It is only in the mystery of the Word made flesh that the mystery of humanity truly becomes clear" ("Gaudium et Spes," No. 22).