"I think so. In fact Juba bears unmistakable signs that he is of their world, although so different in physical appearance. His remarkable comprehension of their method of mental communication is alone sufficient to stamp him as ancestrally one of them. And yet," Edmund continued, musing, "think of the vast stretch of ages that separates the inhabitants of the two sides of this planet, the countless eons of evolution that have brought about the differences now existing! I am delighted to find that Ala has some understanding of all this. She has had good teachers--do not smile--for what you have seen of their mechanical achievements proves that science exists and is cultivated here; and from her savants she has learned--what our astronomers have deduced--that formerly Venus turned rapidly on her axis, and had days and nights swiftly succeeding one another. But they do not know the scientific reasons as completely as we do. With them this is knowledge based largely upon tradition, 'ancestral voices' echoing down through periods of time so vast that our most ancient legends seem but tales of yesterday. Whatever may be the measure of man's antiquity on the earth, I am certain that here intellectual life has existed for millions upon millions of years, and its history stretches back beyond the time when the brake of tidal friction had so far destroyed the rotation of the planet that its surface became permanently divided between the reigns of day and night." I listened with amazement and could not help exclaiming: "But, Edmund, how could you learn all this in so short a time?" "Because," he replied, smiling, "the language of the mind, unhampered by dragging words and blundering sentences, plays back and forth with the quickness of thought. There is another thing, too, which I have learned, a thing so amazing that it daunts me. I have found, I believe, the explanation of that minor note of infinite sadness which, as I told you, I always feel, even in the most joyous-seeming paeans of their color music. I think it is due to their forereaching science, which assures them that this world has entered upon the last stage of its existence which began with the arrest of its axial rotation, and which will end with the total extinction of life through the evaporation of all the waters under the never-setting sun, and the consequent complete desiccation of this now so beautiful land." "But," I objected, "you have said that they never see the sun." "That was, I believe, a mistake, I am sure that they never see the stars or the planets, but I think that sometimes they see the sun, or, at least that there is a tradition of its having been seen. The whole thing is yet obscure to me, but I have received an inkling of something very, very strange in that regard." "Then, Ala may think that it is from the sun that we claim to come," I said, disregarding his last remark, which had a significance which even he could not then have appreciated.