Advent is a season of light and dark. As much as the media and the prevailing spirit of the season tries to frame Christmastime as an endless array of cheer and merriment, there's no getting around the reality of our dark, treacherous, weary world. But it's better that way. The light shines brighter in the dark. Advent celebrates the moment when true light entered into our dark world. "The people who walked in darkness have seen a great light" (Is. 9:2).