Advent is a season of peace and love and harmony, as envisioned by the prophet Isaiah's poetry about wolves and lambs resting together, toddlers playing with vipers, vegetarian lions, etc. That sounds lovely (if a little boring), but... here in the real world, conflict and destruction persist, to put it lightly. Why do we care about an ancient, idealistic vision of peace? And how might we practice this vision within ourselves and our communities?