The lines that are created by the absence of light, by shadow, are crucial to our lives. Boundaries, like this fence, and each delineation of panel, keep us sane. We need to have things broken up, cordoned off, edged, else we would just be lost in a sea of vastness, as we are when we look at the sky or the ocean. It is not something we are built to comprehend, this eternity, even though it is the entirety we are created to grow into, serving as we do, an infinite God. In this earthly life, we have need of our caves and our borders, our separateness. Once we begin to understand that we are all one, then we can let go of them a little at a time, like easing out rope.