What can the science of light teach us about the spiritual life? In this episode, Michael explores the fascinating science of the light emitted by living things and the strange relationship light has with space and time, not as proof of faith, but as a physical image that can deepen our sense of wonder at spiritual reality. From Tolkien’s image of becoming “a glass filled with a clear light” to the Christian call to become the light of Christ in the world, the discussion ultimately turns to two simple practices that can transform how that light shines through us.