Also, in the throat of the bird is given the voice of the air. All that in the wind itself is weak, wild, useless in sweetness, is knit together in its song. As we may imagine the wild form of the bird's wings, so the wild voice of the cloud into its ordered and commanded voice; unwearied, rippling through the clear heaven in its gladness, interpreting all intense passion through the soft spring nights, bursting into acclaim and rapture of choir at daybreak, or lisping and twittering among the boughs and hedges through heat of day, like little winds that only make the cowslip bells shake, and ruffle the petals of the wild rose. 66. Also, upon the plumes of the bird are put the colors of the air; on these the gold of the cloud, that cannot be gathered by any covetousness; the rubies of the clouds, that are not the price of Athena, but are Athena; the vermillion of the cloud-bar, and the flame of the cloud-crest, and the snow of the cloud, and its shadow, and the melted blue of the deep wells of the sky,--all these, seized by the creating spirit, and woven by Athena herself into films and threads of plume; with wave on wave following and fading along breast, and throat, and opened wings, infinite as the dividing of the foam and the sifting of the sea-sand; even the white down of the cloud seeming to flutter up between the stronger plumes,--seen, but too soft for touch. And so the Spirit of the Air is put into, and upon, this created form; and it becomes, through twenty centuries, the symbol of divine help, descending, as the Fire, to speak but as the Dove, to bless. 67. Next, in the serpent we approach the source of a group of myths, world-wide, founded on great and common human instincts, respecting which I must note one or two points which bear intimately on all our subject. For it seems to me that the scholars who are at present occupied in interpretation of human myths have most of them forgotten that there are any such thing as natural myths, and that the dark sayings of men may be both difficult to read, and not always worth reading. And, indeed, all guidance to the right sense of the human and variable myths will probably depend on our first getting at the sense of the natural and invariable ones. The dead hieroglyph may have meant this or that; the living hieroglyph means always the same; but remember, it is just as much a hieroglyph as the other; nay, more,--a "sacred or reserved sculpture," a thing with an inner language. The serpent crest of the king's crown, or of the god's, on the pillars of Egypt, is a mystery, but the serpent itself, gliding past the pillar's foot, is it less a mystery? Is there, indeed, no tongue, except the mute forked flash from its lips, in that running brook of horror on the ground?