Do Miracles Really Happen? In Miracles, C.S. Lewis argues that a Christian must not only accept but rejoice in miracles as a testimony of the unique personal involvement of God in his creation. Using his charismatic warmth, lucidity, and wit, Lewis challenges the rationalists and cynics who are mired in their lack of imagination and provides a poetic and joyous affirmation that miracles really do occur in everyday lives.