Living without mystery means knowing nothing of the mystery of our own life, nothing of the mystery of another person, nothing of the mystery of the world; it means passing over our own hidden qualities and those of others and the world. It means remaining on the surface, taking the world seriously only to the extent that it can be calculated and exploited, and not going beyond the world of calculation and exploitation. Living without mystery means not seeing the crucial processes of life at all and even denying them.
Dietrich Bonhoeffer
God Is in the Manger