The City and the Stars/The Sands of Mars

by Arthur C. Clarke

  “What must have happened in that short period is not hard to guess. The pure mentality had been created, but it was either insane, or as seems more likely from other sources, was implacably hostile to matter. For centuries it ravaged the Universe until brought under control by forces at which we cannot guess. Whatever weapon the Empire used in its extremity squandered the resources of the stars; from the memories of that conflict spring some, though not all, of the legends of the Invaders. But of this I shall presently say more.

  “The Mad Mind could not be destroyed, for it was immortal. It was driven to the edge of the Galaxy and there imprisoned in a way we do not understand. Its prison was a strange artificial star known as the Black Sun, and there it remains to this day. When the Black Sun dies, it will be free again. How far in the future that day lies there is no way of telling.”

  Callitrax became silent, as if lost in his own thoughts, utterly unconscious of the fact that the eyes of all the world were upon him. In the long silence, Alvin glanced over the packed multitude around him, seeking to read their minds as they faced this revelation— and this unknown threat which must now replace the myth of the Invaders. For the most part, the faces of his fellow citizens were frozen in disbelief; they were still struggling to reject their false past, and could not yet accept the yet stranger reality that had superseded it.

  Callitrax began to speak again in a quiet, more subdued voice as he described the last days of the Empire. This was the age, Alvin realized as the picture unfolded before him, in which he would have like to have lived. There had been adventure then, and a superb and dauntless courage— the courage that could snatch victory from the teeth of disaster.

  “Though the Galaxy had been laid waste by the Mad Mind, the resources of the Empire were still enormous, and its spirit was unbroken. With a courage at which we can only marvel, the great experiment was resumed and a search made for the flaw that had caused the catastrophe. There were now, of course, many who opposed the work and predicted further disasters, but they were overruled. The project went ahead and, with the knowledge so bitterly gained, this time it succeeded.

  “The new race that was born had a potential intellect that could not even be measured. But it was completely infantile; we do not know if this was expected by its creators, but it seems likely that they knew it to be inevitable. Millions of years would be needed before it reached maturity, and nothing could be done to hasten the process. Vanamonde was the first of these minds; there must be others elsewhere in the Galaxy, but we believe that only a very few were created, for Vanamonde has never encountered any of his fellows.

  “The creation of the pure mentalities was the greatest achievement of Galactic civilization; in it Man played a major and perhaps a dominant part. I have made no reference to Earth itself, for its story is merely a tiny thread in an enormous tapestry. Since it had always been drained of its most adventurous spirits, our planet had inevitably become highly conservative, and in the end it opposed the scientists who created Vanamonde. Certainly it played no part at all in the final act.

  “The work of the Empire was now finished; the men of that age looked around at the stars they had ravaged in their desperate peril, and they made their decision. They would leave the Universe to Vanamonde.

  “There is a mystery here— a mystery we may never solve, for Vanamonde cannot help us. All we know is that the Empire made contact with— something— very strange and very great, far away around the curve of the Cosmos, at the other extremity of space itself. What it was we can only guess, but its call must have been of immense urgency, and immense promise. Within a very short period of time our ancestors and their fellow races have gone upon a journey which we cannot follow. Vanamonde’s thoughts seem to be bounded by the confines of the Galaxy, but through his mind we have watched the beginnings of this great and mysterious adventure. Here is the image that we have reconstructed; now you are going to look more than a billion years into the past—”

  A pale wraith of its former glory, the slowly turning wheel of the Galaxy hung in nothingness. Throughout its length were the great empty rents which the Mad Mind had torn— wounds that in ages to come the drifting stars would fill. But they would never replace the splendor that had gone.

  Man was about to leave his Universe, as long ago he had left his world. And not only Man, but the thousand other races that had worked with him to make the Empire. They were gathered together, here at the edge of the Galaxy, with its whole thickness between them and the goal they would not reach for ages.

  They had assembled a fleet before which imagination quailed. Its flagships were suns, its smallest vessels, planets. An entire globular cluster, with all its solar systems and all their teeming worlds, was about to be launched across infinity.

  The long line of fire smashed through the heart of the Universe, leaping from star to star. In a moment of time a thousand suns had died, feeding their energies to the monstrous shape that had torn along the axis of the Galaxy, and was now receding into the abyss….

  “So the Empire left our Universe, to meet its destiny elsewhere. When its heirs, the pure mentalities, have reached their full stature, it may return again. But that day must still lie far ahead.

  “This, in its briefest and most superficial outlines, is the story of Galactic civilization. Our own history, which to us seems so important, is no more than a belated and trivial epilogue, though one so complex that we have not been able to unravel all its details. It seems that many of the older, less adventurous races refused to leave their homes; our direct ancestors were among them. Most of these races fell into decadence and are now extinct, though some may still survive. Our own world barely escaped the same fate. During the Transition Centuries— which actually lasted for millions of years— the knowledge of the past was lost or else deliberately destroyed. The latter, hard though it is to believe, seems more probable. For ages, Man sank into a superstitious yet still scientific barbarism during which he distorted history to remove his sense of impotence and failure. The legends of the Invaders are completely false, although the desperate struggle against the Mad Mind undoubtedly contributed something to them. Nothing drove our ancestors back to Earth except the sickness in their souls.

  “When we made this discovery, one problem in particular puzzled us in Lys. The Battle of Shalmirane never occurred— yet Shalmirane existed, and exists to this day. What is more, it was one of the greatest weapons of destruction ever built.

  “It took us some time to resolve this puzzle, but the answer, once it was found, was very simple. Long ago our Earth had a single giant satellite, the Moon. When, in the tug of war between the tides and gravity, the Moon at last began to fall, it became necessary to destroy it. Shalmirane was built for that purpose, and around its use were woven the legends you all know.”

  Callitrax smiled a little ruefully at his immense audience.

  “There are many such legends, partly true and partly false, and other paradoxes in our past which have not yet been resolved. That problem, though, is one for the psychologist rather than the historian. Even the records of the Central Computer cannot be wholly trusted, and bear clear evidence of tampering in the very remote past.

  “On Earth, only Diaspar and Lys survived the period of decadence— Diaspar thanks to the perfection of its machines, Lys owing to its partial isolation and the unusual intellectual powers of its people. But both cultures, even when they had struggled back to their former level, were distorted by the fears and myths they had inherited.

  “These fears need haunt us no longer. It is not my duty as a historian to predict the future, only to observe and interpret the past. But its lesson is clear enough; we have lived too long out of contact with reality, and now the time has come to rebuild our lives.”

  CHAPTER

  25

  Jeserac walked in silent wonder through the streets of a Diaspar he had never seen. So different was it, indeed, from the city in which he had passed all his lives that he would never have rec
ognized it. Yet he knew that it was Diaspar, though how he knew, he did not pause to ask.

  The streets were narrow, the buildings lower— and the park was gone. Or, rather, it did not yet exist. This was the Diaspar before the change, the Diaspar that had been open to the world and to the Universe. The sky above the city was pale blue and flecked with raveled wisps of cloud, slowly twisting and turning in the winds that blew across the face of this younger Earth.

  Passing through and beyond the clouds were more substantial voyagers of the sky. Miles above the city, lacing the heavens with their silent tracery, the ships that linked Diaspar with the outer world came and went upon their business. Jeserac stared for a long time at the mystery and wonder of the open sky, and for a moment fear brushed against his soul. He felt naked and unprotected, conscious that this peaceful, blue dome above his head was no more than the thinnest of shells— that beyond it lay space, with all its mystery and menace.

  The fear was not strong enough to paralyze his will. In part of his mind Jeserac knew that his whole experience was a dream, and a dream could not harm him. He would drift through it, savoring all that it brought to him, until he woke once more in the city that he knew.

  He was walking into the heart of Diaspar, toward the point where in his own age stood the Tomb of Yarlan Zey. There was no tomb here, in this ancient city— only a low, circular building with many arched doorways leading into it. By one of those doorways a man was waiting for him.

  Jeserac should have been overcome with astonishment, but nothing could surprise him now. Somehow it seemed right and natural that he should now be face to face with the man who had built Diaspar.

  “You recognize me, I imagine,” said Yarlan Zey.

  “Of course; I have seen your statue a thousand times. You are Yarlan Zey, and this is Diaspar as it was a billion years ago. I know I am dreaming, and that neither of us is really here.”

  “Then you need not be alarmed at anything that happens. So follow me, and remember that nothing can harm you, since whenever you wish you can wake up in Diaspar— in your own age.”

  Obediently, Jeserac followed Yarlan Zey into the building, his mind a receptive, uncritical sponge. Some memory, or echo of a memory, warned him of what was going to happen next, and he knew that once he would have shrunk from it in horror. Now, however, he felt no fear. Not only did he feel protected by the knowledge that this experience was not real, but the presence of Yarlan Zey seemed a talisman against any dangers that might confront him.

  There were few people drifting down the glideways that led into the depths of the building, and they had no other company when presently they stood in silence beside the long, streamlined cylinder which, Jeserac knew, could carry him out of the city on a journey that would once have shattered his mind. When his guide pointed to the open door, he paused for no more than a moment on the threshold, and then was through.

  “You see?” said Yarlan Zey with a smile. “Now relax, and remember that you are safe— that nothing can touch you.”

  Jeserac believed him. He felt only the faintest tremor of apprehension as the tunnel entrance slid silently toward him, and the machine in which he was traveling began to gain speed as it hurtled through the depths of the earth. Whatever fears he might have had were forgotten in his eagerness to talk with this almost mythical figure from the past.

  “Does it not seem strange to you,” began Yarlan Zey, “that though the skies are open to us, we have tried to bury ourselves in the Earth? It is the beginning of the sickness whose ending you have seen in your age. Humanity is trying to hide; it is frightened of what lies out there in space, and soon it will have closed all the doors that lead into the Universe.”

  “But I saw spaceships in the sky above Diaspar,” said Jeserac.

  “You will not see them much longer. We have lost contact with the stars, and soon even the planets will be deserted. It took us millions of years to make the outward journey— but only centuries to come home again. And in a little while we will have abandoned almost all of Earth itself.”

  “Why did you do it?” asked Jeserac. He knew the answer, yet somehow felt impelled to ask the question.

  “We needed a shelter to protect us from two fears— fear of death, and fear of space. We were a sick people, and wanted no further part in the Universe— so we pretended that it did not exist. We had seen chaos raging through the stars, and yearned for peace and stability. Therefore Diaspar had to be closed, so that nothing new could ever enter it.

  “We designed the city that you know, and invented a false past to conceal our cowardice. Oh, we were not the first to do that— but we were the first to do it so thoroughly. And we redesigned the human spirit, robbing it of ambition and the fiercer passions, so that it would be contented with the world it now possessed.

  “It took a thousand years to build the city and all its machines. As each of us completed his task, his mind was washed clean of its memories, the carefully planned pattern of false ones was implanted, and his identity was stored in the city’s circuits until the time came to call it forth again.

  “So at last there came a day when there was not a single man alive in Diaspar; there was only the Central Computer, obeying the orders which we had fed into it, and controlling the Memory Banks in which we were sleeping. There was no one who had any contact with the past— and so at this point, history began.

  “Then, one by one, in a predetermined sequence, we were called out of the memory circuits and given flesh again. Like a machine that had just been built and was now set operating for the first time, Diaspar began to carry out the duties for which it had been designed.

  “Yet some of us had had doubts even from the beginning. Eternity was a long time; we recognized the risks involved in leaving no outlet, and trying to seal ourselves completely from the Universe. We could not defy the wishes of our culture, so we worked in secret, making the modifications we thought necessary.

  “The Uniques were our invention. They would appear at long intervals and would, if circumstances allowed them, discover if there was anything beyond Diaspar that was worth the effort of contacting. We never imagined that it would take so long for one of them to succeed— nor did we imagine that his success would be so great.”

  Despite that suspension of the critical faculties which is the very essence of a dream, Jeserac wondered fleetingly how Yarlan Zey could speak with such knowledge of things that had happened a billion years after his time. It was very confusing… he did not know where in time or space he was.

  The journey was coming to an end; the walls of the tunnel no longer flashed past him at such breakneck speed. Yarlan Zey began to speak with an urgency, and an authority, which he had not shown before.

  “The past is over; we did our work, for better or for ill, and that is finished with. When you were created, Jeserac, you were given that fear of the outer world, and that compulsion to stay within the city, that you share with everyone else in Diaspar. You know now that that fear was groundless, that it was artificially imposed on you. I, Yarlan Zey, who gave it to you, now release you from its bondage. Do you understand?”

  With those last words, the voice of Yarlan Zey became louder and louder, until it seemed to reverberate through all of space. The subterranean carrier in which he was speeding blurred and trembled around Jeserac as if his dream was coming to an end. Yet as the vision faded, he could still hear that imperious voice thundering into his brain: “You are no longer afraid, Jeserac. You are no longer afraid.”

  He struggled up toward wakefulness, as a diver climbs from the ocean depths back to the surface of the sea. Yarlan Zey had vanished, but there was a strange interregnum when voices which he knew but could not recognize talked to him encouragingly, and he felt himself supported by friendly hands. Then like a swift dawn reality came flooding back.

  He opened his eyes, and saw Alvin and Hilvar and Gerane standing anxiously beside him. But he paid no heed to them; his mind was too filled with the wonder that now lay spr
ead before him— the panorama of forests and rivers, and the blue vault of the open sky.

  He was in Lys; and he was not afraid.

  No one disturbed him as the timeless moment imprinted itself forever on his mind. At last, when he had satisfied himself that this indeed was real, he turned to his companions.

  “Thank you, Gerane,” he said. “I never believed you would succeed.”

  The psychologist, looking very pleased with himself, was making delicate adjustments to a small machine that hung in the air beside him.

  “You gave us some anxious moments,” he admitted. “Once or twice you started to ask questions that couldn’t be answered logically, and I was afraid I would have to break the sequence.”

  “Suppose Yarlan Zey had not convinced me— what would you have done then?”

  “We would have kept you unconscious, and taken you back to Diaspar where you could have waked up naturally, without ever knowing that you’d been to Lys.”

  “And that image of Yarlan Zey you fed into my mind— how much of what he said was the truth?”

  “Most of it, I believe. I was much more anxious that my little saga should be convincing rather than historically accurate, but Callitrax has examined it and can find no errors. It is certainly consistent with all that we know about Yarlan Zey and the origins of Diaspar.”

  “So now we can really open the city,” said Alvin. “It may take a long time, but eventually we’ll be able to neutralize this fear so that everyone who wishes can leave Diaspar.”

  “It will take a long time,” replied Gerane dryly. “And don’t forget that Lys is hardly large enough to hold several hundred million extra people, if all your people decide to come here. I don’t think that’s likely, but it’s possible.”

  “That problem will solve itself,” answered Alvin. “Lys may be tiny, but the world is wide. Why should we let the desert keep it all?”