"On Christmas day, 1863, [Henry Wadsworth] Longfellow—a 57-year-old widowed father of six children, the oldest of which had been nearly paralyzed as his country fought a war against itself—wrote a poem seeking to capture the dynamic and dissonance in his own heart and the world he observes around him. He heard the Christmas bells that December day and the singing of 'peace on earth' (Luke 2:14), but he observed the world of injustice and violence that seemed to mock the truthfulness of this optimistic outlook. The theme of listening recurred throughout the poem, eventually leading to a settledness of confident hope even in the midst of bleak despair."