The breathing in and out of the earth's atmosphere by the body is a symbol of the eternal rhythm of the Self-I and Thou, in and out, up and down, forward and back, systole and diastole in their final unity. The conscious realization and incarnation of this rhythm, balance, unity, in the unique, individual pattern of one's life would lead — so I feel — to the breathing out of one's last breath into death into that air of eternity, which is the breath of life when the body is left behind.