I have yet to trace the causes of this (which will be a long task, belonging to art questions, not to mythological ones); but it is, I believe, much connected with the brooding of the shadow of death over the Greeks without any clear hope of immortality. The restriction of the color on their vases to dim red (or yellow) with black and white, is greatly connected with their sepulchral use, and with all the melancholy of Greek tragic thought; and in this gloom the failure of color-perception is partly noble, partly base: noble, in its earnestness, which raises the design of Greek vases as far above the designing of mere colorist nations like the Chinese, as men's thoughts are above children's; and yet it is partly base and earthly, and inherently defective in one human faculty; and I believe it was one cause of the perishing of their art so swiftly, for indeed there is no decline so sudden, or down to such utter loss and ludicrous depravity, as the fall of Greek design on its vases from the fifth to the third century B.C. On the other hand, the pure colored-gift, when employed for pleasure only, degrades in another direction; so that among the Indians, Chinese, and Japanese, all intellectual progress in art has been for ages rendered impossible by the prevalence of that faculty; and yet it is, as I have said again and again, the spiritual power of art; and its true brightness is the essential characteristic of all healthy schools. ** 'eremnen Aigida pasi'.--Il. iv. 166. 95. This, then, finally, was the perfect color-conception of Athena: the flesh, snow-white (the hands, feet, and face of marble, even when the statue was hewn roughly in wood); the eyes of keen pale blue, often in statues represented by jewels; the long robe to the feet, crocus-colored; and the ægis thrown over it of thunderous purple; the helmet golden (Il. v. 744.), and I suppose its crest also, as that of Achilles. If you think carefully of the meaning and character which is now enough illustrated for you in each of these colors, and remember that the crocus-color and the purple were both of them developments, in opposite directions, of the great central idea of fire-color, or scarlet, you will see that this form of the creative spirit of the earth is conceived as robed in the blue, and purple, and scarlet, the white, and the gold, which have been recognized for the sacred chords of colors, from the day when the cloud descended on a Rock more mighty than Ida.