Far more interesting was the fact that a flight of steps led down from one end of the terrace, apparently to another ledge a few hundred feet below. The steps were cut in the sheer face of the building, and Alvin wondered if they led all the way to the surface. It was an exciting possibility: in his enthusiasm, he overlooked the physical implications of a five-thousand-foot descent.

             But the stairway was little more than a hundred feet long. It came to a sudden end against a great block of stone that seemed to have been welded across it. There was no way past: deliberately and thoroughly, the route had been barred.

             Alvin approached the obstacle with a sinking heart. He had forgotten the sheer impossibility of climbing a stairway a mile high, if indeed he could have completed the descent, and he felt a baffled annoyance at having come so far only to meet with failure.

             He reached the stone, and for the first time saw the message engraved upon it. The letters were archaic, but he could decipher them easily enough. Three times he read the simple inscription: then he sat down on the great stone slabs and gazed at the inaccessible land below.

             THERE IS A BETTER WAY. GIVE MY GREETINGS TO THE KEEPER OF THE RECORDS.

             ALAINE OF LYNDAR

2

             Rorden, Keeper of the Records, concealed his surprise when his visitor announced himself. He recognized Alvin at once, and even as the boy was entering had punched out his name on the information machine. Three seconds later, Alvin's personal card was lying in his hand.

             According to Jeserac, the duties of the Keeper of the Records were somewhat obscure, but Alvin had expected to find him in the heart of an enormous filing system. He had also—for no reason at all—expected to meet someone quite as old as Jeserac. Instead, he found a middle-aged man in a single room containing perhaps a dozen large machines. Apart from a few papers strewn across the desk, Rorden's greeting was somewhat absentminded, for he was surreptitiously studying Alvin's card.

             "Alaine of Lyndar?" he said. "No, I've never heard of him. But we can soon find who he was."

             Alvin watched with interest while he punched a set of keys on one of the machines. Almost immediately there came the glow of a synthesizer field, and a slip of paper materialized.

             "Alaine seems to have been a predecessor of mine—a very long time ago. I thought I knew all the Keepers for the last hundred million years, but he must have been before that. It's so long ago that only his name has been recorded, with no other details at all. Where was that inscription?"

             "In the Tower of Loranne," said Alvin after a moment's hesitation.

             Another set of keys was punched, but this time the field did not reappear and no paper materialized.

             "What are you doing?" asked Alvin. "Where are all your records?"

             The Keeper laughed.

             "That always puzzles people. It would be impossible to keep written records of all the information we need: it's recorded electrically and automatically erased after a certain time, unless there's a special reason for preserving it. If Alaine left any message for posterity, we'll soon discover it."

             "How?"

             "There's no one in the world who could tell you that. All I know is that this machine is an Associator. If you give it a set of facts, it will hunt through the sum total of human knowledge until it correlates them."

             "Doesn't that take a lot of time?"

             "Very often. I have sometimes had to wait twenty years for an answer. So won't you sit down?" he added, the crinkles round his eyes belying his solemn voice.

             Alvin had never met anyone quite like the Keeper of the Records, and he decided that he liked him. He was tired of being reminded that he was a boy, and it was pleasant to be treated as a real person.

             Once again the synthesizer field flickered, and Rorden bent down to read the slip. The message must have been a long one, for it took him several minutes to finish it. Finally he sat down on one of the room's couches, looking at his visitor with eyes which, as Alvin noticed for the first time, were of a most disconcerting shrewdness.

             "What does it say?" he burst out at last, unable to contain his curiosity any longer.

             Rorden did not reply. Instead, he was the one to ask for information.

             "Why do you want to leave Diaspar?" he said quietly.

             If Jeserac or his father had asked him that question, Alvin would have found himself floundering in a morass of half-truths or downright lies. But with this man, whom he had met for only a few minutes, there seemed none of the barriers that had cut him off from those he had known all his life.

             "I'm not sure," he said, speaking slowly but readily. "I've always felt like this. There's nothing outside Diaspar, I know—but I want to go there all the same."

             He looked shyly at Rorden, as if expecting encouragement, but the Keeper's eyes were far away. When at last he again turned to Alvin, there was an expression on his face that the boy could not fully understand, but it held a tinge of sadness that was somewhat disturbing.

             No one could have told that Rorden had come to the greatest crisis in his life. For thousands of years he had carried out his duties as the interpreter of the machines, duties requiring little initiative or enterprise. Somewhat apart from the tumult of the city, rather aloof from his fellows, Rorden had lived a happy and contented life. And now this boy had come, disturbing the ghosts of an age that had been dead for millions of centuries, and threatening to shatter his cherished peace of mind.

             A few words of discouragement would be enough to destroy the threat, but looking into the anxious, unhappy eyes, Rorden knew that he could never take the easy way. Even without the message from Alaine, his conscience would have forbidden it.

             "Alvin," he began, "I know there are many things that have been puzzling you. Most of all, I expect, you have wondered why we now live here in Diaspar when once the whole world was not enough for us."

             Alvin nodded, wondering how the other could have read his mind so accurately.

             "Well, I'm afraid I cannot answer that question completely. Don't look so disappointed: I haven't finished yet. It all started when Man was fighting the Invaders—whoever or whatever they were. Before that, he had been expanding through the stars, but he was driven back to Earth in wars of which we have no conception.

             Perhaps that defeat changed his character, and made him content to pass the rest of his existence on Earth. Or perhaps the Invaders promised to leave him in peace if he would remain on his own planet: we don't know. All that is certain is that he started to develop an intensely centralized culture, of which Diaspar was the final expression.

             "At first there were many of the great cities, but in the end Diaspar absorbed them all, for there seems to be some force driving men together as once it drove them to the stars. Few people ever recognize its presence, but we all have a fear of the outer world, and a longing for what is known and understood. That fear may be irrational, or it may have some foundation in history, but it is one of the strongest forces in our lives."