The world is full of walls. Everywhere we go, there are fences, gates, partitions and other ingeniously constructed barriers—all aimed at keeping something or someone in and keeping something or someone else out. We need walls: walls in our homes to protect us against wind and rain; walls to keep livestock safely in and predators out; walls to help us separate spaces and improve organization and efficiency. But one does not have to be a sage to comprehend how walls, both literal and spiritual, can lead to grief, division and even violence. All walls serve a purpose, but not all walls serve the purposes of God.