Arthur C Clarke - City And The Stars Read online

  At that moment, alvin and khedron were a hundred feet underground, in a small, boxlike room whose walls seemed to be flowing steadily upward. That was the only indication of movement; there was no trace of vibration to show that they were sinking swiftly into the earth, descending toward a goal that even now neither of them fully understood. It had been absurdly easy, for the way had been prepared for them. (By whom? Wondered alvin. By the central com­puter? Or by yarlan zey himself, when he transformed the city?) the monitor screen had shown them the long, vertical shaft plunging into the depths, but they had followed its course only a little way when the image had blanked out. That meant, alvin knew, that they were asking for information that the monitor did not possess, and perhaps never had possessed. He had scarcely framed this thought when the screen came to life once more. On it appeared a brief message, printed in the simplified script that machines had used to communicate with men ever since they had achieved intellectual equality:

  Stand where the statue gazes-and remember: diaspar was not always thus

  The last five words were in larger type, and the meaning of the entire message was obvious to alvin at once. Mentally framed code messages had been used for ages to unlock doors or set machines in action. As for "stand where the statue gazes"-that was really too simple. "I wonder how many people have read this message?" said alvin thoughtfully. "Fourteen, to my knowledge," replied khedron. "And there may have been others." he did not amplify this rather cryptic remark, and alvin was in too great a hurry to reach the park to question him further. They could not be certain that the mechanisms would still respond to the triggering impulse. When they reached the tomb, it had taken them only a moment to locate the single slab among all those paving the floor, upon which the gaze of yarlan zey was fixed. It was only at first sight that the statue seemed to be looking out across the city; if one stood directly in front of it, one could see that the eyes were down­cast and that the elusive smile was directed toward a spot just inside the entrance to the tomb. Once the secret was realized, there could be no doubt about it. Alvin moved to -the next slab, and found that yarlan zey was no longer look­ing toward him. He rejoined khedron, and mentally echoed the words that the jester spoke aloud: "diaspar was not always thus." in­stantly, as if the millions of years that had lapsed since their last operation had never existed, the waiting machines re­sponded. The great slab of stone on which they were standing began to carry them smoothly into the depths. Overhead, the patch of blue suddenly flickered out of exis­tence. The shaft was no longer open; there was no danger that anyone should accidentally stumble into it. Alvin wondered fleetingly if another slab of stone had somehow been materi­alized to replace the one now supporting him and khedron, then decided against it. The original slab probably still paved the tomb; the one upon which they were standing might only exist for infinitesimal fractions of a second, being continuous­ly re-created at greater and greater depths in the earth to give the illusion of steady downward movement. Neither alvin nor khedron spoke as the walls flowed silent­ly past them. Khedron was once again wrestling with his con­science, wondering if this time he had gone too far. He could not imagine where this route might lead, if indeed it led any­where. For the first time in his life, he began to understand the real meaning of fear. Alvin was not afraid; he was too excited. This was the sensation he had known in the tower of loranne, when he had looked out across the untrodden desert and seen the stars conquering the night sky. He had merely gazed at the iu­known then; he was being carried toward it now. The walls ceased to flow past them. A patch of light ap­peared at one side of their mysteriously moving room, grew brighter and brighter, and was suddenly a door. They stepped through it, took a few paces along the short corridor beyond -and then were standing in a great, circular cavern whose walls came together in a sweeping curve three hundred feet above their heads. The column down whose interior they had descended seemed far too slim to support the millions of tons of rock above it; indeed, it did not seem to be an integral part of the chamber at all, but gave the impression of being an after­thought. Khedron, following alvin's gaze, arrived at the same conclusion. "This column," he said, speaking rather jerkily, as if anx­ious to find something to say, "was built simply to house the shaft down which we came. It could never have carried the traffic that must have passed through here when diaspar was still open to the world. That came through those tunnels over there; i suppose you recognize what they are?" alvin looked toward the walls of the chamber, more than a hundred yards away. Piercing them at regular intervals were large tunnels, twelve of them, radiating in all directions exact­ly as the moving ways still did today. He could see that they sloped gently upward, and now he recognized the familiar gray surface of the moving ways. These were only the severed stumps of the great roads; the strange material that gave them life was now frozen into immobility. When the park had been built, the hub of the moving way system had been buried. But it had never been destroyed. Alvin began to walk toward the nearest of the tunnels. He had gone only a few paces when he realized that something was happening to the ground beneath his feet. It was becom­ing transparent. A few more yards, and he seemed to be stand­ing in midair without visible support. He stopped and stared down into the void beneath him. "Khedron!" he called. "Come and look at this!" the other joined him, and together they gazed at the marvel beneath their feet. Faintly visible, at an indefinite depth, lay an enormous map--a great network of lines converging to­ward a spot beneath the central shaft. They stared at it in silence for a moment; then khedron said quietly: you realize what this is?" "i think so," replied alvin. "It's a map of the entire trans­port system, and those little circles must be the other cities of earth. I can just see names beside them, but they're too faint to read." "there must have been some form of internal illumination once," said khedron absently. He was tracing the lines beneath his feet, following them with his eyes out toward the walls of the chamber. "I thought so!" he exclaimed suddenly. "Do you see how these radiating lines lead toward the small tunnels?" alvin had noticed that besides the great arches of the mov­ing ways there were innumerable smaller tunnels leading out of the chamber-tunnels that sloped downward instead of up. Kedron continued without waiting for a reply. Ht would be hard to think of a simpler system. People would come down the moving ways, select the place they wished to visit, and then follow the appropriate line on the map. "And what happened to them after that?" asked alvin. Khedron was silent, his eyes searching out the mystery of those descending tunnels. There were thirty or forty of them, all looking exactly the same. Only the names on the map would have enabled one to distinguish between them, and those names were indecipherable now. Alvin had wandered away and was circumnavigating the central pillar. Presently his voice came to khedron, slightly muffled and overlaid with echoes from the walls of the cham­ber. "What is it?' called khedron, not wishing to move, be­cause he had nearly succeeded in reading one of the dimly visible groups of characters. But alvin's voice was insistent, so he went to join him. Far beneath was the other half of the great map, its faint webwork radiating to the points of the compass. This time, however, not all of it was too dim to be clearly seen, for one of the lines and only one-was brilliantly illuminated. It seemed to have no connection with the rest of the system, and pointed like a gleaming arrow to one of the downward-slop­ing tunnels. Near its end the line transfixed a circle of golden light, and against that circle was the single word lys. That was all. For a long time alvin and khedron stood gazing down at that silent symbol. To khedron it was a challenge he knew he could never accept-and which, indeed, he would rather did not exist. But to alvin it hinted at the fulfillment of all his dreams; though the word lys meant nothing to him, he let it roll around his mouth, tasting its sibilance like some exotic flavor. The blood was pounding in his veins, and his cheeks were flushed as by a fever. He stared around this great con­course, trying to imagine it as it had been in the ancient days, when air transport had come to an end but the cities of earth still had contact w
ith one another. He thought of the countless millions of years that had passed with the traffic steadily dwindling and the lights on the great map dying one by one, until at last only this single line remained. How long, he wondered, had it gleamed there among its darkened companions, waiting to guide the steps that never came, until yarlan zey had sealed the moving ways and closed diaspar against the world? And that had been a billion years ago. Even then, lys must have lost touch with diaspar. It seemed impossible that it could have survived; perhaps, after all, the map meant nothing now. Khedron broke into his reverie at last. He seemed nerv­ous and ill at ease, not at all like the confident and self-as­sured person that he had always been in the city above. "I do not think that we should go any farther now," he said. "`It may not be safe until-until we are more pre­pared." there was wisdom in this, but alvin recognized the un­derlying note of fear in khedron's voice. Had it not been for that, he might have been sensible, but a too-acute awareness of his own valor, combined with a contempt for khedron's timidity, drove alvin onward. It seemed foolish to have come so far, only to turn back when the goal might be in sight. "I'm going down that tunnel," he said stubbornly, as if challenging khedron to stop him. "I want to see where it leads." he set off resolutely, and after a moment's hesita­tion the jester followed him along the arrow of light that burned beneath their feet. As they stepped into the tunnel, they felt the familiar tug of the peristaltic field, and in a moment were being swept effortlessly into the depths. The journey lasted scarcely a minute; when the field released them they were standing at one end of a long narrow chamber in the form of a half­cylinder. At its distant end, two dimly lit tunnels stretched away toward infinity. Men of almost every civilization that had existed since the dawn would have found their surroundings completely famil­iar, yet to alvin and khedron this was a glimpse of another world. The purpose of the long, streamlined machine that lay aimed like a projectile at the far tunnel was obvious, but that made it none the less novel. Its upper portion was transparent, and looking through the walls alvin could see rows of luxuriously appointed seats. There was no sign of any entrance, and the entire machine was floating about a foot above a single metal rod that stretched away into the distance, disappearing in one of the tunnels. A few yards away another rod led to the second tunnel, but no machine floated above it. Alvin knew, as surely as if he had been told, that somewhere beneath unknown, far-off lys, that second machine was waiting in another such chamber as this. Khedron began to talk, a little too swiftly. "What a peculiar transport system! It could only handle a hundred people at a time, so they could not have expected much traffic. And why did they go to all this trouble to bury themselves in the earth if the skies were still open? Perhaps the invaders would not even permit them to fly, though i find that hard to believe. Or was this built during the transi­tion period, while men still traveled but did not wish to be reminded of space? They could go from city to city, and never see the sky and the stars." he gave a nervous laugh. "I feel sure of one thing, alvin. When lys existed, it was much like diaspar. All cities must be essentially the same. No wonder that they were all abandoned in the end, and merged into diaspar. What was the point of having more than one?" alvin scarcely heard him. He was busy examining the long projectile trying to find the entrance. If the machine was controlled by some cental or verbal code order, he might never be able to make it obey him, and it would remain a maddening enigma for the rest of his life. The silently opening door took him completely unawares. There was no sound, no warning when a section of the wall simply faded from sight and the beautifully designed interior lay open before his eyes. This was the moment of choice. Until this instant, he had always been able to turn back if he wished. But if he stepped inside that welcoming door, he knew what would happen, though not where it would lead. He would no longer be in control of his own destiny, but would have placed himself in the keeping of unknown forces. He scarcely hesitated. He was afraid to hold back, being fearful that if he waited too long this moment might never come again-or that if it did, his courage might not match his desire for knowledge. Khedron opened his mouth in anx­ious protest, but before he could speak, alvin had stepped through the entrance. He turned to face khedron, who was standing framed in the barely visible rectangle of the door­way, and for a moment there was a strained silence while each waited for the other to speak. The decision was made for them. There was a faint flicker of translucence, and the wall of the machine had closed again. Even as alvin raised his hand in farewell, the long cylinder started to ease itself forward. Before it had entered the tun­nel, it was already moving faster than a man could run. There had been a time when, every day, millions of men made such journeys, in machines basically the same as this, as they shuttled between their homes and their humdrum jobs. Since that far-off day, man had explored the universe and returned again to earth-had won an empire, and had it wrestled from his grasp. Now such a journey was being made again, in a machine wherein legions of forgotten and unadventurous men would have felt completely at home. And it was to be the most momentous journey any human being had undertaken for a billion years.

  Alystra had searched the tomb a dozen times, though once was quite sufficient, for there was nowhere anyone could hide. After the first shock of surprise, she had wondered if what she had followed across the park had not been alvin and khedron at all, but only their projections. But that made no sense; projections were materialized at any spot one wished to visit, without the trouble of going there in person. No sane person would "walk" his projected image a couple of miles, taking half an hour to reach his destination, when he could be there instantly. No; it was the real alvin and the real khedron that she had followed into the tomb. Somewhere, then, there must be a secret entrance. She might as well look for it while she was waiting for them to come back. As luck would have it, she missed khedron's reappearance, for she was examining a column behind the statue when he emerged on the other side of it. She heard his footsteps, turned toward him, and saw at once that he was alone. "Where is alvin?" she cried. It was some time before the jester answered. He looked distraught and irresolute, and alystra had to repeat her ques­tion before he took any notice of her. He did not seem in the least surprised to find her there. "I do not know where he is," he answered at last. "I can only tell you that he is on his way to lys. Now you know as much as i do." it was never wise to take khedron's words at their face value. But alystra needed no further assurance that the jes­ter was not playing his role today. He was telling her the truth-whatever it might mean.

  Ten

  When the door closed behind him, alvin slumped into the nearest seat. All strength seemed suddenly to have been drained from his legs: at last he knew, as he had never known before, that fear of the unknown that haunted all his fellow men. He felt himself trembling in every limb, and his sight became misty and uncertain. Could he have escaped from this speeding machine he would willingly have done so, even at the price of abandoning all his dreams. It was not fear alone that overwhelmed him, but a sense of unutterable loneliness. All that he knew and loved was in diaspar; even if he was going into no danger, he might never see his world again. He knew, as no man had known for ages, what it meant to leave one's home forever. In this moment of desolation, it seemed to him of no importance whether the path he was following led to peril or to safety; all that mattered to him now was that it led away from home. The mood slowly passed; the dark shadows lifted from his mind. He began to pay attention to his surroundings, and to see what he could learn from the unbelievably ancient ve­hicle in which he was traveling. It did not strike alvin as particularly strange or marvelous that this buried transport system should still function perfectly after such aeons of time. It was not preserved in the eternity circuits of the city's own monitors, but there must be similar circuits elsewhere guarding it from change or decay. For the first time he noticed the indicator board that formed part of the forward wall. It carried a brief but reassuring message: lys 35 minutes

  Even as he watched, the
number changed to " 34." that at least was useful information, though since he had no idea of the machine's speed it told him nothing about the length of the journey. The walls of the tunnel were one continual blur of gray, and the only sensation of movement was a very slight vibration he would never have noticed had he not looked for it. Diaspar must be many miles away by now, and above him would be the desert with its shifting sand dunes. Per­haps at this very moment he was racing below the broken hills he had watched so often from the tower of loranne. His imagination sped onward to lys, as if impatient to arrive ahead of his body. What sort of a city would it be? No matter how hard he tried, he could only picture another and smaller version of diaspar. He wondered if it still existed, then assured himself that not otherwise would this machine be carrying him swiftly through the earth. Suddenly there was a distinct change in the vibration under­foot. The vehicle was slowing down-there was no question of that. The time must have passed more swiftly than he had thought; somewhat surprised, alvin glanced at the indicator. Lys 23 minutes