Are miracles merely "a series of disconnected raids on Nature" or are they "the various steps of a strategically coherent invasion?" C.S. Lewis explores philosophical and historical arguments surrounding Biblical and contemporary accounts of signs and wonders in Miracles: A Preliminary Study (1947). In this week's episode, Drs. Crystal and David C. Downing discuss Lewis's fascinating book including its origin, arguments, metaphors, and Lewis's timeless celebration of the grand miracle--the Incarnation.