The City and the Stars/The Sands of Mars

by Arthur C. Clarke

  What was the relationship, he wondered, between these two entities, which though so different in every possible way had maintained their extraordinary partnership over such aeons of time? He was somehow certain that the robot was much the more important of the two. It had been the confidant of the Master and must still know all his secrets.

  Alvin looked at the enigmatic machine that still regarded him so steadily. Why would it not speak? What thoughts were passing through its complicated and perhaps alien mind? Yet, surely, if it had been designed to serve the Master, its mind would not be altogether alien, and it should respond to human orders.

  As he thought of all the secrets which that stubbornly mute machine must possess, Alvin felt a curiosity so great that it verged upon greed. It seemed unfair that such knowledge should be wasted and hidden from the world; here must lie wonders beyond even the ken of the Central Computer in Diaspar.

  “Why won’t your robot speak to us?” he asked the polyp, when Hilvar had momentarily run out of questions. The answer was one he had half expected.

  “It was against the Master’s wishes for it to speak with any voice but his, and his voice is silent now.”

  “But it will obey you?”

  “Yes; the Master placed it in our charge. We can see through its eyes, wherever it goes. It watches over the machines that preserve this lake and keep its water pure. Yet it would be truer to call it our partner than our servant.”

  Alvin thought this over. An idea, still vague and half-formed, was beginning to take shape in his mind. Perhaps it was inspired by pure lust for knowledge and power; when he looked back on this moment he could never be certain just what his motives were. They might be largely selfish, but they also contained some element of compassion. If he could do so, he would like to break this futile sequence and release these creatures from their fantastic fate. He was not sure what could be done about the polyp, but it might be possible to cure the robot of its insanity and at the same time to release its priceless, pent-up memories.

  “Are you certain,” he said slowly, talking to the polyp but aiming his words at the robot, “that you are really carrying out the Master’s wishes by remaining here? He desired the world to know of his teaching, but they have been lost while you hide here in Shalmirane. It was only by chance that we discovered you, and there may be many others who would like to hear the doctrine of the Great Ones.”

  Hilvar glanced at him sharply, obviously uncertain of his intentions. The polyp seemed agitated, and the steady beating of its respiratory equipment faltered for a few seconds. Then it replied, in a voice not altogether under control: “We have discussed this problem for many years. But we cannot leave Shalmirane, so the world must come to us, no matter how long it takes.”

  “I have a better idea,” said Alvin eagerly. “it is true that you may have to stay here in the lake, but there is no reason why your companion should not come with us. He can return whenever he wishes or whenever you need him. Many things have changed since the Master died— things which you should know about, but which you can never understand if you stay here.”

  The robot never moved, but in its agony of indecision the polyp sank completely below the surface of the lake and remained there for several minutes. Perhaps it was having a soundless argument with its colleague; several times it began to re-emerge; thought better of it, and sank into the water again. Hilvar took this opportunity to exchange a few words with Alvin.

  “I’d like to know what you are trying to do,” he said softly, his voice half-bantering and half-serious. “Or don’t you know yourself?”

  “Surely,” replied Alvin, “you feel sorry for these poor creatures? Don’t you think it would be a kindness to rescue them?”

  “I do, but I’ve learned enough about you to be fairly certain that altruism isn’t one of your dominant emotions. You must have some other motive.”

  Alvin smiled ruefully. Even if Hilvar did not read his mind— and he had no reason to suppose that he did— he could undoubtedly read his character.

  “Your people have remarkable mental powers,” he replied, trying to divert the conversation from dangerous ground. “I think they might be able to do something for the robot, if not this animal.” He spoke very softly, lest he be overheard. The precaution might have been a useless one, but if the robot did intercept his remarks it gave no sign of it.

  Fortunately, before Hilvar could press the inquiry any further, the polyp emerged once more from the lake. In the last few minutes it had become a good deal smaller and its movements were more disorganized. Even as Alvin watched, a segment of its complex, translucent body broke away from the main bulk and then disintegrated into multitudes of smaller sections, which swiftly dispersed. The creature was beginning to break up before their eyes.

  Its voice, when it spoke again, was very erratic and hard to understand.

  “Next cycle starting,” it jerked out in a kind of fluctuating whisper. “Did not expect it so soon— only few minutes left— stimulation too great— cannot hold together much longer.”

  Alvin and Hilvar stared at the creature in horrified fascination. Even though the process they were watching was a natural one, it was not pleasant to watch an intelligent creature apparently in its death throes. They also felt an obscure sense of guilt; it was irrational to have the feeling, since it was of no great importance when the polyp began another cycle, but they realized that the unusual effort and excitement caused by their presence was responsible for this premature metamorphosis.

  Alvin realized that he would have to act quickly or his opportunity would be gone— perhaps only for a few years, perhaps for centuries.

  “What have you decided?” he said eagerly. “Is the robot coming with us?”

  There was an agonizing pause while the polyp tried to force its dissolving body to obey its will. The speech diaphragm fluttered, but no audible sound came from it. Then, as if in a despairing gesture of farewell, it waved its delicate palps feebly and let them fall back into the water, where they promptly broke adrift and went floating out into the lake. In a matter of minutes, the transformation was over. Nothing of the creature larger than an inch across remained. The water was full of tiny, greenish specks, which seemed to have a life and mobility of their own and which rapidly disappeared into the vastness of the lake.

  The ripples on the surface had now altogether died away, and Alvin knew that the steady pulse beat that had sounded in the depths would now be stilled. The lake was dead again— or so it seemed. But that was an illusion; one day the unknown forces that had never failed to do their duty in the past would exert themselves again, and the polyp would be reborn. It was a strange and wonderful phenomenon, yet was it so much stranger than the organization of the human body, itself a vast colony of separate, living cells?

  Alvin wasted little effort on such speculations. He was oppressed by his sense of failure, even though he had never clearly conceived the goal he was aiming for. A dazzling opportunity had been missed and might never again return. He stared sadly out across the lake, and it was some time before his mind registered the message which Hilvar was speaking quietly in his ear.

  “Alvin,” his friend said softly, “I think you have won your point.”

  He spun swiftly on his heels. The robot, which until now had been floating aloofly in the distance, never approaching within twenty feet of them, had moved up in silence and was now poised a yard above his head. Its unmoving eyes, with their wide angles of vision, gave no indication of its direction of interest. Probably it saw the entire hemisphere in front of it with equal clarity, but Alvin had little doubt that its attention was now focused upon him.

  It was waiting for his next move. To some extent, at least, it was now under his control. It might follow him to Lys, perhaps even to Diaspar— unless it changed its mind. Until then, he was its probationary master.

  CHAPTER

  14

  The journey back to Airlee lasted almost three days— partly because Alvin, for h
is own reasons, was in no hurry to return. The physical exploration of Lys had now taken second place to a more important and exciting project; he was slowly making contact with the strange, obsessed intelligence which had now become his companion.

  He suspected that the robot was trying to use him for its own purposes, which would be no more than poetic justice. What its motives were he could never be quite certain, since it still stubbornly refused to speak to him. For some reason of his own— perhaps fear that it might reveal too many of his secrets— the Master must have placed very efficient blocks upon its speech circuits, and Alvin’s attempts to clear them were completely unsuccessful. Even indirect questioning of the “If you say nothing I shall assume you mean ‘Yes’ ” type failed; the robot was much too intelligent to be taken in by such simple tricks.

  In other respects, however, it was more co-operative. It would obey any orders that did not require it to speak or reveal information. After a while Alvin found that he could control it, as he could direct the robots in Diaspar, by thought alone. This was a great step forward, and a little later the creature— it was hard to think of it as a mere machine— relaxed its guard still further and allowed him to see through its eyes. It did not object, it seemed, to such passive forms of communication, but it blocked all attempts at closer intimacy.

  Hilvar’s existence it ignored completely; it would obey none of his commands, and its mind was closed to all his probing. At first this was something of a disappointment to Alvin, who had hoped that Hilvar’s greater mental powers would enable him to force open this treasure chest of hidden memories. It was not until later that he realized the advantage of possessing a servant who would obey no one else in all the world.

  The member of the expedition who strongly objected to the robot was Krif. Perhaps he imagined that he now had a rival, or perhaps he disapproved, on general principles, of anything that flew without wings. When no one was looking, he had made several direct assaults on the robot, which had infuriated him still further by taking not the slightest notice of his attacks. Eventually Hilvar had been able to calm him down, and on the homeward journey in the ground-car he seemed to have resigned himself to the situation. Robot and insect escorted the vehicle as it glided silently through forest and field— each keeping to the side of its respective master and pretending that its rival was not there.

  Seranis was already waiting for them as the car floated into Airlee. It was impossible, Alvin thought, to surprise these people. Their interlinked minds kept them in touch with everything that was happening in their land. He wondered how they had reacted to his adventures in Shalmirane, which presumably everyone in Lys now knew about.

  Seranis seemed to be worried and more uncertain than he had ever seen her before, and Alvin remembered the choice that now lay before him. In the excitement of the last few days he had almost forgotten it; he did not like to spend energy worrying about problems that still lay in the future. But the future was now upon him; he must decide in which of these two worlds he wished to live.

  The voice of Seranis was troubled when she began to speak, and Alvin had the sudden impression that something had gone awry with the plans that Lys had been making for him. What had been happening during his absence? Had emissaries gone into Diaspar to tamper with Khedron’s mind— and had they failed in their duty?

  “Alvin,” began Seranis, “there are many things I did not tell you before, but which you must now learn if you are to understand our actions.

  “You know one of the reasons for the isolation of our two races. The fear of the Invaders, that dark shadow in the depths of every human mind, turned your people against the world and made them lose themselves in their own dreams. Here in Lys that fear has never been so great, though we bore the burden of the final attack. We had a better reason for our actions, and what we did, we did with open eyes.

  “Long ago, Alvin, men sought immortality and at last achieved it. They forgot that a world which had banished death must also banish life. The power to extend his life indefinitely might bring contentment to the individual, but brought stagnation to the race. Ages ago we sacrificed our immortality, but Diaspar still follows the false dream. That is why our ways parted—and why they must never meet again.”

  Although the words had been more than half expected, the blow seemed none the less for its anticipation. Yet Alvin refused to admit the failure of all his plans— half-formed though they were— and only part of his brain was listening to Seranis now. He understood and noted all her words, but the conscious portion of his mind was retracing the road to Diaspar, trying to imagine every obstacle that could be placed in his way.

  Seranis was clearly unhappy. Her voice was almost pleading as it spoke, and Alvin knew that she was talking not only to him but to her son. She must be aware of the understanding and affection that had grown up between them during the days they had spent together. Hilvar was watching his mother intently as she spoke, and it seemed to Alvin that his gaze held not merely concern but also more than a trace of censure.

  “We do not wish to make you do anything against your will, but you must surely realize what it would mean if our people met again. Between our culture and yours is a gulf as great as any that ever separated Earth from its ancient colonies. Think of this one fact, Alvin. You and Hilvar are now of nearly the same age—but both he and I will have been dead for centuries while you are still a youth. And this is only your first in an infinite series of lives.”

  The room was very quiet, so quiet that Alvin could hear the strange, plaintive cries of unknown beasts in the fields beyond the village. Presently, he said, almost in a whisper: “What do you want me to do?”

  “We hoped that we could give you the choice of staying here or returning to Diaspar, but now that is impossible. Too much has happened for us to leave the decision in your hands. Even in the short time you have been here, your influence has been highly disturbing. No, I am not reproving you; I am sure you intended no harm. But it would have been best to leave the creatures you met in Shalmirane to their own destiny.

  “And as for Diaspar—” Seranis gave a gesture of annoyance. “Too many people know where you have gone; we did not act in time. What is most serious, the man who helped you discover Lys has vanished; neither your Council nor our agents can discover him, so he remains a potential danger to our security. Perhaps you are surprised that I am telling you all this, but it is quite safe for me to do so. I am afraid we have only one choice before us; we must send you back to Diaspar with a false set of memories. Those memories have been constructed with great care, and when you return home you will know nothing of us. You will believe that you have had rather dull and dangerous adventures in gloomy underground caverns, where the roofs continually collapsed behind you and you kept alive only through eating unappetizing weeds and drinking from occasional springs. For the rest of your life you will believe this to be the truth, and everyone in Diaspar will accept your story. There will be no mystery, then, to lure any future explorers; they will think they know all there is to be known about Lys.”

  Seranis paused and looked at Alvin with anxious eyes. “We are very sorry that this is necessary and ask your forgiveness while you still remember us. You may not accept our verdict, but we know many facts that are hidden from you. At least you will have no regrets, for you will believe that you have discovered all that there is to be found.”

  Alvin wondered if that was true. He was not sure that he would ever settle down to the routine of life in Diaspar, even when he had convinced himself that nothing worthwhile existed beyond its walls. What was more, he had no intention of putting the matter to the test.

  “When do you wish me to undergo this— treatment?” Alvin asked.

  “Immediately. We are ready now. Open your mind to me, as you did before, and you will know nothing until you find yourself back in Diaspar.”

  Alvin was silent for a while. Then he said quietly: “I would like to say good-bye to Hilvar.”

  Seranis nodd
ed.

  “I understand. I will leave you here for a while and return when you are ready.” She walked over to the stairs that led down to the interior of the house, and left them alone on the roof.

  It was some time before Alvin spoke to his friend; he felt a great sadness, yet also an unbroken determination not to permit the wreck of all his hopes. He looked once more down upon the village where he had found a measure of happiness and which he might never see again if those who were ranged behind Seranis had their way. The ground-car was still standing beneath one of the wide-branching trees, with the patient robot hanging in the air above it. A few children had gathered around to examine this strange newcomer, but none of the adults seemed in the least interested.

  “Hilvar,” said Alvin abruptly, “I’m very sorry about this.”

  “So am I,” Hilvar answered, his voice unstable with emotion. “I had hoped that you could have remained here.”

  “Do you think that what Seranis wants to do is right?”

  “Do not blame my mother. She is only doing as she is asked,” replied Hilvar. Though he had not answered his question, Alvin had not the heart to ask it again. It was unfair to put such a strain on his friend’s loyalty.

  “Then tell me this,” asked Alvin, “how could your people stop me if I tried to leave with my memories untouched?”

  “It would be easy. If you tried to escape, we would take control of your mind and force you to come back.”

  Alvin had expected as much and was not discouraged. He wished that he could confide in Hilvar, who was obviously upset by their impending separation, but he dared not risk the failure of his plans. Very carefully, checking every detail, he traced out the only road that could lead him back to Diaspar on the terms he wished.