"Christianity does not agree with the optimistic thinkers who say, "We can fix things if we try hard enough." Nor does it agree with the pessimists who see only a dystopian future. The message of Christianity is, instead, "Things really are this bad, and we can't heal or save ourselves. Things really are this dark--nevertheless, there is hope." The Christmas message is that "on those living in the land of deep darkness a light has dawned." Notice that it doesn't say from the world a light has sprung, but upon the world a light has dawned. It has come from outside. There is light outside of this world, and Jesus has brought that light to save us; indeed, he is the Light (John 8:12)."