The hollow bones of eagles are like the emptiness of form revered in the practice of Soto Zen Buddhism. Except emptiness is expressed with an enso, the popular Zen circle. Many are unaware that this emptiness of life expressed in the enso is empty because it is vast, it is open for anything to exist within it at any moment. In the hollowness of our lives ease is given passage through without effort. The bone marrow, if still there, softens into openness from being stimulated by something new and fresh coming in to sustain your life. In the hollowness we are not weighed down by how our senses perceive the world and each other. We understand that we are not always certain of what we see, smell, taste, touch or think. In hollowness we are not confused by past experiences that can surface unconsciously. We can breathe ourselves into freedom from the struggle that we were taught to engage as children. In the same way as being hollow, emptiness of the bone, allows the passage of breath into what appears as nothing but is still heard and felt as a sacred song. We cannot perceive the origin of this song. We can only experience it.