Another signal from the leader, and out of the car scurried the humans and servo-robots. They ran across the platform toward the shadow of the building. Here, two of the men, who Walther guessed to be the experts imported to Earth for this job, traced a circle around the door with an instrument that resembled a small camera. Evidently this was to cut off the alarm system, for almost immediately they relaxed and went on to open the door without any attempt at caution. Proceeding in single file, lighting their way with powerful flashlights, they passed in similar manner through a series of inner doors to an elevator leading down into the vaults. A servo-robot took over its operation, and they shot downward. At each level, the leader stepped off the elevator to look around. At the sixth level, he nodded and they followed him into the vault. This was the book vault. Tier upon tier, the stacks of books reached in every direction as far as a flashlight beam could probe. Motioning Walther to follow him, the leader took a piece of chalk and began marking off groups of books. The men rounded up library carts for the servo-robots, who swiftly fell to loading the carts and trundling them back to the elevator. Walther soon moved ahead of the leader and began marking the books himself. They had started in the M-sections. With mounting excitement, Walther chalked off Machiavelli, Mann, Markham, Masefield, Maugham, Maupassant, Melville, Millay, Moliere.... Leaping to the next tier, he raced through the stacks marking the works of Nathan and Newton, O'Neill ... Ovid.... Then on to Parker, Pater, Pepys, Plato, Poe.... Racine, Rousseau.... Sandburg ... Santayana.... What an astounding haul this would be! The masterpieces of the ages, to be whisked across space, from star system to star system, until at last they reached his homeland, where they would grow and multiply a million-fold, generation into generation, down through the millenniums of universal time. Back to the A-sections! Adams, Aeschylus, Anderson, Aristotle.... On to the B-sections! Bacon ... Balzac ... Benet ... Bronte ... Byron.... It was like drinking a heady burgundy. Each new title whetted his taste for more. Inevitably, the very magnitude of the thing began to have its sobering effect. Was it actually possible to get so much material out of the vaults? Off the Earth? The leader caught up with him in the K-sections and motioned him not to mark off any more books. They'd have a hard time getting those Walther had already chalked. Walther rode up with the next elevator load. On the way down, he indicated to the servo-robot that he wanted to go all the way to the bottom level. There he stepped out of the elevator and stood in the darkness for a moment to steady himself from the excitement of marking so many books. Then he swept his flashlight beam slowly around the vault.