As we are wont to argue the invisible things of God, even his eternal power and Godhead, from the things that are seen, finding them all images of thought and vehicles of intelligence, so we have an argument for God more impressive, in one view, because the matter of it is so deep and mysterious, from the fact that a grand, harmonic, soul-interpreting law of music pervades all the objects of the material creation, and that things without life, all metals and woods and valleys and mountains and waters, are tempered with distinctions of sound, and toned to be a language to the feeling of the heart. It is as if God had made the world about us to be a grand organ of music, so that our feelings might have play in it, as our understanding has in the light of the sun and the outward colors and forms of things. What is called the musical scale, or octave, is fixed in the original appointments of sound just as absolutely and definitely as the colors of the rainbow or prism in the optical properties and laws of light. And the visible objects of the world are not more certainly shaped and colored to us under the exact laws of light and the prism, than they are tempered and toned, as objects audible, to give distinctions of sound by their vibrations in the terms of the musical octave. It is not simply that we hear the sea roar and the floods clap their hands in anthems of joy; it is not that we hear the low winds sigh, or the storms howl dolefully, or the ripples break peacefully on the shore, or the waters dripping sadly from the rock, or the thunders crashing in horrible majesty through the pavements of heaven; not only do all the natural sounds we hear come to us in tones of music as interpreters of feeling, but there is hid in the secret temper and substance of all matter a silent music, that only waits to sound and become a voice of utterance to the otherwise unutterable feeling of our heart--a voice, if we will have it, of love and worship to the God of all. First, there is a musical scale in the laws of the air itself, exactly answering to the musical sense or law of the soul. Next, there is in all substances a temperament of quality related to both; so that whatever kind of feeling there may be in a soul--war and defiance, festivity and joy, sad remembrance, remorse, pity, penitence, self-denial, love, adoration--may find some fit medium of sound in which to express itself. And, what is not less remarkable, connected with all these forms of substances there are mathematical laws of length and breadth, or definite proportions of each, and reflective angles, that are every way as exact as those which regulate the colors of the prism, the images of the mirror, or the telescopic light of astronomic worlds--mathematics for the heart as truly as for the head.