The City and the Stars / The Sands of Mars (10 page)

“I cannot tell you unless you have the permission of the Council.”

This was a most unexpected, even a disconcerting, development. There were very few places in Diaspar that could not be visited by anyone who pleased. Alystra was quite certain that Alvin had
not
obtained Council permission, and this could only mean that a higher authority was helping him.

The Council ruled Diaspar, but the Council itself could be overridden by a superior power— the all-but-infinite intellect of the Central Computer. It was difficult not to think of the Central Computer as a living entity, localized in a single spot, though actually it was the sum total of all the machines in Diaspar. Even if it was not alive in the biological sense, it certainly possessed at least as much awareness and self-consciousness as a human being. It must know what Alvin was doing, and, therefore, it must approve, otherwise it would have stopped him or referred him to the Council, as the information machine had done to Alystra.

There was no point in staying here. Alystra knew that any attempt to find Alvin— even if she knew exactly where he was in this enormous building— would be doomed to failure. Doors would fail to open; slideways would reverse when she stood on them, carrying her backward instead of forward; elevator fields would be mysteriously inert, refusing to lift her from one floor to another. If she persisted, she would be gently conveyed out into the street by a polite but firm robot, or else shuttled round and round Council Hall until she grew fed up and left under her own volition.

She was in a bad temper as she walked out into the street. She was also more than a little puzzled, and for the first time felt that there was some mystery here which made her personal desires and interests seem very trivial indeed. That did not mean that they would be any the less important to her. She had no idea what she was going to do next, but she was sure of one thing. Alvin was not the only person in Diaspar who could be stubborn and persistent.

CHAPTER

8

T
he image on the monitor screen faded as Alvin raised his hands from the control panel and cleared the circuits. For a moment he sat quite motionless, looking into the blank rectangle that had occupied all his conscious mind for so many weeks. He had circumnavigated his world; across that screen had passed every square foot of the outer wall of Diaspar. He knew the city better than any living man save perhaps Khedron; and he knew now that there was no way through the walls.

The feeling that possessed him was not mere despondency; he had never really expected that it would be as easy as this, that he would find what he sought at the first attempt. What was important was that he had eliminated one possibility. Now he must deal with the others.

He rose to his feet and walked over to the image of the city which almost filled the chamber. It was hard not to think of it as an actual model, though he knew that in reality it was no more than an optical projection of the pattern in the memory cells he had been exploring. When he altered the monitor controls and set his viewpoint moving through Diaspar, a spot of light would travel over the surface of this replica, so that he could see exactly where he was going. It had been a useful guide in the early days, but he soon had grown so skillful at setting the co-ordinates that he had not needed this aid.

The city lay spread out beneath him; he looked down upon it like a god. Yet he scarcely saw it as he considered, one by one, the steps he should now take.

If all else failed, there was one solution to the problem. Diaspar might be held in a perpetual stasis by its eternity circuits, frozen forever according to the pattern in the memory cells, but that pattern could itself be altered, and the city would then change with it. It would be possible to redesign a section of the outer wall so that it contained a doorway, feed this pattern into the monitors, and let the city reshape itself to the new conception.

Alvin suspected that the large areas of the monitor control board whose purpose Khedron had not explained to him were concerned with such alterations. It would be useless to experiment with them; controls that could alter the very structure of the city were firmly locked and could be operated only with the authority of the Council and the approval of the Central Computer. There was very little chance that the Council would grant him what he asked, even if he was prepared for decades or even centuries of patient pleading. That was not a prospect that appealed to him in the least.

He turned his thoughts toward the sky. Sometimes he had imagined, in fantasies which he was half-ashamed to recall, that he had regained the freedom of the air which man had renounced so long ago. Once, he knew, the skies of Earth had been filled with strange shapes. Out of space the great ships had come, bearing unknown treasures, to berth at the legendary Port of Diaspar. But the Port had been beyond the limits of the city; aeons ago it had been buried by the drifting sand. He could dream that somewhere in the mazes of Diaspar a flying machine might still be hidden, but he did not really believe it. Even in the days when small, personal flyers had been in common use, it was most unlikely that they had ever been allowed to operate inside the limits of the city.

For a moment he lost himself in the old, familiar dream. He imagined that he was master of the sky, that the world lay spread out beneath him, inviting him to travel where he willed. It was not the world of his own time that he saw, but the lost world of the dawn— a rich and living panorama of hills and lakes and forests. He felt a bitter envy of his unknown ancestors, who had flown with such freedom over all the earth and who had let its beauty die.

This mind-drugging reverie was useless; he tore himself back to the present and to the problem at hand. If the sky was unattainable and the way by land was barred, what remained?

Once again he had come to the point when he needed help, when he could make no further progress by his own efforts. He disliked admitting the fact, but was honest enough not to deny it. Inevitably, his thoughts turned to Khedron.

Alvin had never been able to decide whether he liked the Jester. He was very glad that they had met, and was grateful to Khedron for the assistance and implicit sympathy he had given him on his quest. There was no one else in Diaspar with whom he had so much in common, yet there was some element in the other’s personality that jarred upon him. Perhaps it was Khedron’s air of ironic detachment, which sometimes gave Alvin the impression that he was laughing secretly at all his efforts, even while he seemed to be doing his best to help. Because of this, as well as his own natural stubbornness and independence, Alvin hesitated to approach the Jester except as a last resort.

They arranged to meet in a small, circular court not far from Council Hall. There were many such secluded spots in the city, perhaps only a few yards from some busy thoroughfare, yet completely cut off from it. Usually they could be reached only on foot after a rather roundabout walk; sometimes, indeed, they were at the center of skillfully contrived mazes which enhanced their isolation. It was rather typical of Khedron that he should have chosen such a place for a rendezvous.

The court was little more than fifty paces across, and was in reality located deep within the interior of some great building. Yet it appeared to have no definite physical limits, being bounded by a translucent blue-green material which glowed with a faint internal light. However, though there were no visible limits, the court had been so laid out that there was no danger of feeling lost in infinite space. Low walls, less than waist high and broken at intervals so that one could pass through them, managed to give the impression of safe confinement without which no one in Diaspar could ever feel entirely happy.

Khedron was examining one of these walls when Alvin arrived. It was covered with an intricate mosaic of colored tiles, so fantastically involved that Alvin did not even attempt to unravel it.

“Look at this mosaic, Alvin,” said the Jester. “Do you notice anything strange about it?”

“No,” confessed Alvin after a brief examination. “I don’t care for it— but there’s nothing strange about
that.
”

Khedron ran his fingers over the colored tiles. “You are not very observant,” he said. “Look at these edges here— see how they become rounded and softened. This is something that one very seldom sees in Diaspar, Alvin. It is wear— the crumbling away of matter under the assault of time. I can remember when this pattern was new, only eighty thousand years ago, in my last lifetime. If I come back to this spot a dozen lives from now, these tiles will have been worn completely away.”

“I don’t see anything very surprising about that,” answered Alvin. “There are other works of art in the city not good enough to be preserved in the memory circuits, but not bad enough to be destroyed outright. One day, I suppose, some other artist will come along and do a better job. And his work won’t be allowed to wear out.”

“I knew the man who designed this wall,” said Khedron, his fingers still exploring the cracks in the mosaic. “Strange that I can remember that fact, when I don’t recall the man himself. I could not have liked him, so I must have erased him from my mind.” He gave a short laugh. “Perhaps I designed it myself, during one of my artistic phases, and was so annoyed when the city refused to make it eternal that I decided to forget the whole affair. There— I knew that piece was coming loose!”

He had managed to pull out a single flake of golden tile, and looked very pleased at this minor sabotage. He threw the fragment on the ground, adding, “Now the maintenance robots will have to do something about it!”

There was a lesson for him here, Alvin knew. That strange instinct known as intuition, which seemed to follow short cuts not accessible to mere logic, told him that. He looked at the golden shard lying at his feet, trying to link it somehow to the problem that now dominated his mind.

It was not hard to find the answer, once he realized that it existed.

“I see what you are trying to tell me,” he said to Khedron. “There are objects in Diaspar that aren’t preserved in the memory circuits, so I could never find them through the monitors at Council Hall. If I was to go there and focus on this court, there would be no sign of the wall we’re sitting on.”

“I think you might find the wall. But there would be no mosaic on it.”

“Yes, I can see that,” said Alvin, too impatient now to bother about such hairsplitting. “And in the same way, parts of the city might exist that had never been preserved in the eternity circuits, but which hadn’t yet worn away. Still, I don’t really see how that helps me. I
know
that the outer wall exists— and that it has no openings in it.”

“Perhaps there is no way out,” answered Khedron. “I can promise you nothing. But I think there is still a great deal that the monitors can teach us— if the Central Computer will let them. And it seems to have taken rather a liking to you.”

Alvin pondered over this remark on their way to Council Hall. Until now, he had assumed that it was entirely through Khedron’s influence that he had been able to gain access to the monitors. It had not occurred to him that it might be through some intrinsic quality of his own. Being a Unique had many disadvantages; it was only right that it should have some compensations.

The unchanging image of the city still dominated the chamber in which Alvin had spent so many hours. He looked at it now with a new understanding; all that he saw here existed— but all of Diaspar might not be mirrored. Yet, surely, any discordancies must be trivial, and, as far as he could see, undetectable.

“I attempted to do this many years ago,” said Khedron, as he sat down at the monitor desk, “but the controls were locked against me. Perhaps they will obey me now.”

Slowly, and then with mounting confidence as he regained access to long-forgotten skills, Khedron’s fingertips moved over the control desk, resting for a moment at the nodal points in the sensitive grid buried in the panel before him.

“I think that’s correct,” he said at last. “Anyway we’ll soon see.”

The screen glowed into life, but instead of the picture that Alvin had expected, there appeared a somewhat baffling message:

REGRESSION WILL COMMENCE AS SOON AS YOU HAVE SET RATE CONTROL

“Foolish of me,” muttered Khedron. “I got everything else right and forgot the most important thing of all.” His fingers now moved with a confident assurance over the board, and as the message faded from the screen he swung around in his seat so that he could look at the replica of the city.

“Watch this, Alvin,” he said. “I think we are both going to learn something new about Diaspar.”

Alvin waited patiently, but nothing happened. The image of the city floated there before his eyes in all its familiar wonder and beauty— though he was conscious of neither now. He was about to ask Khedron what he should look for when a sudden movement caught his attention, and he turned his head quickly to follow it. It had been no more than a half-glimpsed flash or flicker, and he was too late to see what had made it. Nothing had altered; Diaspar was just as he had always known it. Then he saw that Khedron was watching him with a sardonic smile, so he looked again at the city. This time, the thing happened before his eyes.