"And it leads to your world?"

  "Oh no—you couldn't live here. But there are plenty of

  planets like Earth in the universe, and we've lound one that will suit you. We'll establish bridgeheads like this all over Earth, so your people will only have to walk through them to be saved. Of course, they'll have to start building up civilization ag when they reach their new homes, but it's their only hope, You have to pass on this message, and tell them what to do."

  "I can just see them listening to me," said Bill. "Why don't you go and talk to the President?"

  "Because yours was the only mind we were able to contact. Others seemed closed to us: we don't understand why."

  "I could tell you," said Bill, looking at the nearly empty bottle in front of him. He was certainly getting his money's worth. What a remarkable thing the human mind was! Of course, there was nothing at all original in this dialogue: it was easy to see where the ideas came from. Only last week he'd been reading a story about the end of the world, and all this wishful thinking about bridges and tunnels through space was pretty obvious compensation for anyone who'd spent five years wrestling with recalcitrant rockets.

  "If the sun does blow up," Bill asked abruptly—trying to catch his hallucination unawares—"what would happen?"

  "Why, your planet would be melted instantly. All the planets, in fact, right out to Jupiter."

  Bill had to admit that this was quite a grandiose conception. He let his mind play with the thought, and the more he considered it, the more he liked it.

  "My dear hallucination," he remarked pityingly, "if I believed you, d'you know what I'd say?"

  "But you must believe us!" came the despairing cry across the light-years.

  Bill ignored it. He was warming to his theme.

  "I'd tell you this. It would be the best thing that could possibly happen. Yes, it would save a whole lot of misery. No one would have to worry about the Russians and the atom bomb and the high cost of living. Oh, it would be wonderful! It's just what everybody really wants. Nice of you to come

  along and tell us, but just you go back home and pull your old bridge after you."

  There was consternation on Thaar. The Supreme Scientist's brain, floating like a great mass of coral in its tank of nutrient solution, turned slightly yellow about the edges—something it had not done since the Xantil invasion, five thousand years ago. At least fifteen psychologists had nervous breakdowns and were never the same again. The main computer in the College of Cosmophysics started dividing every number in its memory circuits by zero, and promptly blew all its fuses.

  And on Earth, Bill Cross was really hitting his stride.

  "Look at me," he said, pointing a wavering finger at his chest. "I've spent years trying to make rockets do something useful, and they tell me I'm only allowed to build guided missiles, so that we can all blow each other up. The sun will make a neater job of it, and if you did give us another planet we'd only start the whole damn thing all over again."

  He paused sadly, marshaling his morbid thoughts.

  "And now Brenda heads out of town without even leaving a note. So you'll pardon my lack of enthusiasm for your Boy Scout act."

  He couldn't have said "enthusiasm" aloud, Bill realized. But he could still think it, which was an interesting scientific discovery. As he got drunker and drunker, would his cogitation—whoops, that nearly threw him!—finally drop down to words of one syllable?

  In a final despairing exertion, the Thaarns sent their thoughts along the tunnel between the stars.

  "You can't really mean it, Bill! Are all human beings like you?"

  Now that was an interesting philosophical question! Bill considered it carefully—or as carefully as he could in view of the warm, rosy glow that was now beginning to envelop him. After all, things might be worse. He could get another job, if only for the pleasure of telling General Potter what he could do with his three stars. And as for Brenda—well, women were like streetcars: there'd always be another along in a minute.

  Best of all, there was a second bottle of whisky in the Top Secret file. Oh, frabjous day! He rose unsteadily to his feet and wavered across the room.

  For the last time, Thaar spoke to Earth.

  "Bill!" it repeated desperately. "Surely all human beings can't be like you!"

  Bill turned and looked into the swirling tunnel. Strange— it seemed to be lighted with flecks of starlight, and was really rather pretty. He felt proud of himself: not many people could imagine that.

  "Like me?" he said. "No, they're not." He smiled smugly across the light-years, as the rising tide of euphoria lifted him out of his despondency. "Come to think of it," he added, "there are a lot of people much worse off than me. Yes, I guess I must be one of the lucky ones, after all."

  He blinked in mild surprise, for the tunnel had suddenly collapsed upon itself and the whitewashed wall was there again, exactly as it had always been. Thaar knew when it was beaten.

  "So much for that hallucination," thought Bill. "I was getting tired of it, anyway. Let's see what the next one's like."

  As it happened, there wasn't a next one, for five seconds later he passed out cold, just as he was setting the combination of the file cabinet.

  The next two days were rather vague and bloodshot, and he forgot all about the interview.

  On the third day something was nagging at the back of his mind: he might have remembered if Brenda hadn't turned up again and kept him busy being forgiving.

  And there wasn't a fourth day, of course.

  London August 1953

  The Possessed

  And now the sun ahead was so close that the hurricane of radiation was forcing the Swarm back into the dark night of space. Soon it would be able to come no closer; the gales of light on which it rode from star to star could not be faced so near their source. Unless it encountered a planet very soon, and could fall down into the peace and safety of its shadow, this sun must be abandoned as had so many before.

  Six cold outer worlds had already been searched and discarded. Either they were frozen beyond all hope of organic life, or else they harbored entities of types that were useless to the Swarm. If it was to survive, it must find hosts not too unlike those it had left on its doomed and distant home. Millions of years ago the Swarm had begun its journey, swept starward by the fires of its own exploding sun. Yet even now the memory of its lost birthplace was still sharp and clear, an ache that would never die.

  There was a planet ahead, swinging its cone of shadow through the flame-swept night. The senses that the Swarm had developed upon its long journey reached out toward the approaching world, reached out and found it good.

  The merciless buffeting of radiation ceased as the black disc of the planet eclipsed the sun. Falling freely under gravity, the Swarm dropped swiftly until it hit the outer fringe of the

  atmosphere. The first time it had made planetfall it had almost met its doom, but now it contracted its tenuous substance with the unthinking skill of long practice, until it formed a tiny, close-knit sphere. Slowly its velocity slackened, until at last it was floating motionless between earth and sky.

  For many years it rode the winds of the stratosphere from Pole to Pole, or let the soundless fusillades of dawn blast it westward from the rising sun. Everywhere it found life, but nowhere intelligence. There were things that crawled and flew and leaped, but there were no things that talked or built. Ten million years hence there might be creatures here with minds that the Swarm could possess and guide for its own purposes; there was no sign of them now. It could not guess which of the countless life-forms on this planet would be the heir to the future, and without such a host it was helpless—a mere pattern of electric charges, a matrix of order and self-awareness in a universe of chaos. By its own resources the Swarm had no control over matter, yet once it had lodged in the mind of a sentient race there was nothing that lay beyond its powers.

  It was not the first time, and it would not be the last, that the planet had been
surveyed by a visitant from space— though never by one in such peculiar and urgent need. The Swarm was faced with a tormenting dilemma. It could begin its weary travels once more, hoping that ultimately it might find the conditions it sought, or it could wait here on this world, biding its time until a race had arisen which would fit its purpose.

  It moved like mist through the shadows, letting the vagrant winds take it where they willed. The clumsy, ill-formed reptiles of this young world never saw its passing, but it observed them, recording, analyzing, trying to extrapolate into the future. There was so little to choose between all these creatures; not one showed even the first faint glimmerings of conscious mind. Yet if it left this world in search of another, it might roam the Universe in vain until the end of time.

  At last it made its decision. By its very nature, it could choose both alternatives. The greater part of the Swarm

  would continue its travels among the stars, but a portion of it would remain on this world, like a seed planted in the hope of future harvest.

  It began to spin upon its axis, its tenuous body flattening into a disc. Now it was wavering at the frontiers of visibility— it was a pale ghost, a faint will-o'-the-wisp that suddenly fissured into two unequal fragments. The spinning slowly died away: the Swarm had become two, each an entity with all the memories of the original, and all its desires and needs.

  There was a last exchange of thoughts between parent and child who were also identical twins. If all went well with them both, they would meet again in the far future here at this valley in the mountains. The one who was staying would return to this point at regular intervals down the ages; the one who continued the search would send back an emissary if ever a better world was found. And then they would be united again, no longer homeless exiles vainly wandering among the indifferent stars.

  The light of dawn was spilling over the raw, new mountains when the parent swarm rose up to meet the sun. At the edge of the atmosphere the gales of radiation caught it and swept it unresisting out beyond the planets, to start again upon the endless search.

  The one that was left began its almost equally hopeless task. It needed an animal that was not so rare that disease or accident could make it extinct, nor so tiny that it could never acquire any power over the physical world. And it must breed rapidly, so that its evolution could be directed and controlled as swiftly as possible.

  The search was long and the choice difficult, but at last the Swarm selected its host. Like rain sinking into thirsty soil, it entered the bodies of certain small lizards and began to direct their destiny.

  It was an immense task, even for a being which could never know death. Generation after generation of the lizards was swept into the past before there came the slightest improvement in the race. And always, at the appointed time, the

  Swarm returned to its rendezvous among the mountains. Always it returned in vain: there was no messenger from the stars, bringing news of better fortune elsewhere.

  The centuries lengthened into millennia, the millennia into eons. By the standards of geological time, the lizards were now changing rapidly. Presently they were lizards no more, but warm-blooded, fur-covered creatures that brought forth their young alive. They were still small and feeble, and their minds were rudimentary, but they contained the seeds of future greatness.

  Yet not only the living creatures were altering as the ages slowly passed. Continents were being rent asunder, mountains being worn down by the weight of the unwearying rain. Through all these changes, the Swarm kept to its purpose; and always, at the appointed times, it went to the meeting place that had been chosen so long ago, waited patiently for a while, and came away. Perhaps the parent swarm was still searching or perhaps—it was a hard and terrible thought to grasp—some unknown fate had overtaken it and it had gone the way of the race it had once ruled. There was nothing to do but to wait and see if the stubborn life-stuff of this planet could be forced along the path to intelligence.

  And so the eons passed. . . .

  Somewhere in the labyrinth of evolution the Swarm made its fatal mistake and took the wrong turning. A hundred million years had gone since it came to Earth, and it was very weary. It could not die, but it could degenerate. The memories of its ancient home and of its destiny were fading: its intelligence was waning even while its hosts climbed the long slope that would lead to self-awareness.

  By a cosmic irony, in giving the impetus which would one day bring intelligence to this world, the Swarm had exhausted itself. It had reached the last stage of parasitism; no longer could it exist apart from its hosts. Never again could it ride free above the world, driven by wind and sun. To make the pilgrimage to the ancient rendezvous, it must travel slowly

  and painfully in a thousand little bodies. Yet it continued the immemorial custom, driven on by the desire for reunion which burned all the more fiercely now that it knew the bitterness of failure. Only if the parent swarm returned and reabsorbed it could it ever know new life and vigor.

  The glaciers came and went; by a miracle the little beasts that now housed the waning alien intelligence escaped the clutching fingers of the ice. The oceans overwhelmed the land, and still the race survived. It even multiplied, but it could do no more. This world would never be its heritage, for far away in the heart of another continent a certain monkey had come down from the trees and was looking at the stars with the first glimmerings of curiosity.

  The mind of the Swarm was dispersing, scattering among a million tiny bodies, no longer able to unite and assert its will. It had lost all cohesion; its memories were fading. In a million years, at most, they would all be gone.

  Only one thing remained—the blind urge which still, at intervals which by some strange aberration were becoming ever shorter, drove it to seek its consummation in a valley that long ago had ceased to exist.

  Quietly riding the lane of moonlight, the pleasure steamer passed the island with its winking beacon and entered the fjord. It was a calm and lovely night, with Venus sinking in the west out beyond the Faroes, and the lights of the harbor reflected with scarcely a tremor in the still waters far ahead.

  Nils and Christina were utterly content. Standing side by side against the boat rail, their fingers locked together, they watched the wooded slopes drift silently by. The tall trees were motionless in the moonlight, their leaves unruffled by even the merest breath of wind, their slender trunks rising whitely from pools of shadow. The whole world was asleep; only the moving ship dared to break the spell that had bewitched the night.

  Then suddenly, Christina gave a little gasp and Nils felt her fingers tighten convulsively on his. He followed her gaze:

  she was staring out across the water, looking toward the silent sentinels of the forest.

  "What is it, darling?" he asked anxiously.

  "Look!" she replied, in a whisper Nils could scarcely hear. "There—under the pines!"

  Nils stared, and as he did so the beauty of the night ebbed slowly away and ancestral terrors came crawling back from exile. For beneath the trees the land was alive: a dappled brown tide was moving down the slopes of the hill and merging into the dark waters. Here was an open patch on which the moonlight fell unbroken by shadow. It was changing even as he watched: the surface of the land seemed to be rippling downward like a slow waterfall seeking union with the sea.

  And then Nils laughed and the world was sane once more. Christina looked at him, puzzled but reassured.

  "Don't you remember?" he chuckled. "We read all about it in the paper this morning. They do this every few years, and always at night. It's been going on for days."

  He was teasing her, sweeping away the tension of the last few minutes. Christina looked back at him, and a slow smile lit up her face.

  "Of course!" she said. "How stupid of me!" Then she turned once more toward the land and her expression became sad, for she was very tenderhearted.

  "Poor little things!" she sighed. "I wonder why they do it?"

  Nils shrugged his shoulders
indifferently.

  "No one knows," he answered. "It's just one of those mysteries. I shouldn't think about it if it worries you. Look—we'll soon be in harbor!"

  They turned toward the beckoning lights where their future lay, and Christina glanced back only once toward the tragic, mindless tide that was still flowing beneath the moon.

  Obeying an urge whose meaning they had never known, the doomed legions of the lemmings were finding oblivion beneath the waves.

  London June 1951

  Death and the Senator

  Washington had never looked lovelier in the spring; and this was the last spring, thought Senator Steelman bleakly, that he would ever see. Even now, despite all that Dr. Jordan had told him, he could not fully accept the truth. In the past there had always been a way of escape; no defeat had been final. When men had betrayed him, he had discarded them—even ruined them, as a warning to others. But now the betrayal was within himself; already, it seemed, he could feel the labored beating of the heart that would soon be stilled. No point in planning now for the Presidential election of 1976; he might not even live to see the nominations. . . .

  It was an end of dreams and ambition, and he could not console himself with the knowledge that for all men these must end someday. For him it was too soon; he thought of Cecil Rhodes, who had always been one of his heroes, crying "So much to do—so little time to do it in!" as he died before his fiftieth birthday. He was already older than Rhodes, and had done far less.

  The car was taking him away from the Capitol; there was symbolism in that, and he tried not to dwell upon it. Now he was abreast of the New Smithsonian—that vast complex of museums he had never had time to visit, though he had watched it spread along the Mall throughout the years he

  had been in Washington. How much he had missed, he told himself bitterly, in his relentless pursuit of power. The whole universe of art and culture had remained almost closed to him, and that was only part of the price that he had paid. He had become a stranger to his family and to those who were once his friends. Love had been sacrificed on the altar of ambition, and the sacrifice had been in vain. Was there anyone in all the world who would weep at his departure?