"I have two of them myself," said Julith. "I want them so I can always remember this beach. And my children and their children will hold them, too, and hear our sea talking." She folded his fingers around the shell. "You keep this one for yourself." "Thank you," he said. "I will." The combers rolled in, booming and spouting against the land. The Terrans called them the horses of God. A thin cloud in the west was turning rose and gold. "Are there oceans on our new planet?" asked Julith. "Yes," he said. "It's the most Earth-like world we could find that wasn't already inhabited. You'll be happy there." _But the trees and grasses, the soil and the fruits thereof, the beasts of the field and the birds of the air and the fish of the waters beneath, form and color, smell and sound, taste and texture, everything is different. Is alien. The difference is small, subtle, but it is the abyss of two billion years of separate evolution, and no other world can ever quite be Earth._ Julith looked straight at him with solemn eyes. "Are you folk afraid of Hulduvians?" she asked. "Why, no," he said. "Of course not." "Then why are you giving Earth to them?" It was a soft question, but it trembled just a little. "I thought all your people understood the reason by now," said Jorun. "Civilization--the civilization of man and his nonhuman allies--has moved inward, toward the great star-clusters of Galactic center. This part of space means nothing to us any more; it's almost a desert. You haven't seen starlight till you've been by Sagittarius. Now the Hulduvians are another civilization. They are not the least bit like us; they live on big, poisonous worlds like Jupiter and Saturn. I think they would seem like pretty nice monsters if they weren't so alien to us that neither side can really understand the other. They use the cosmic energies too, but in a different way--and their way interferes with ours just as ours interferes with theirs. Different brains, you see. "Anyway, it was decided that the two civilizations would get along best by just staying away from each other. If they divided up the Galaxy between them, there would be no interference; it would be too far from one civilization to the other. The Hulduvians were, really, very nice about it. They're willing to take the outer rim, even if there are fewer stars, and let us have the center. "So by the agreement, we've got to have all men and manlike beings out of their territory before they come to settle it, just as they'll move out of ours. Their colonists won't be coming to Jupiter and Saturn for centuries yet; but even so, we have to clear the Sirius Sector now, because there'll be a lot of work to do elsewhere. Fortunately, there are only a few people living in this whole part of space. The Sirius Sector has been an isolated, primi--ah--quiet region since the First Empire fell, fifty thousand years ago." Julith's voice rose a little. "But those people are _us_!"