And therefore they were doomed, though they might flourish for a million years. Sooner or later, the environment to which they were so perfectly adapted would change, and they could not change with it. They were too far from the crucial fork in the evolutionary road ever to retrace their steps.

  On this world, the choice remained; the irrevocable decision between brain and body had not yet been made. The future was still in the balance. Here, on this tropical plain, the balance might be tipped-in favor of intelligence.

  MOON-WATCHER

  It was surprising how quickly all the animals grew accustomed to the ship; because it did nothing, and merely stood motionless on its tripod of legs, they soon came to regard it as part of the landscape. In the heat of noon, lions would shelter beneath it, and sometimes elephants and dinotheria would rub their thick hides against the landing gear. Clindar preferred to choose a moment when none of the larger or more dangerous beasts were around when he made his first exit

  From the underbelly of the ship a transparent, cylindrical tube ten feet in diameter lowered itself until it had reached ground level, down this, in an equally transparent cage, rode Clindar and his equipment. The curving walls slid open, and he stepped out onto the new world.

  He was insulated from it, as completely as if he were still inside the ship, but the flexible suit that surrounded him from head to foot was only a minor inconvenience. He had full freedom of movement, for there was no external vacuum to make the suit stiff and rigid. Indeed, he could even breathe the surrounding atmosphere-after it had been scrubbed and filtered and purified by the small processing pack on his chest. The air of this planet might carry lethal organisms, but it was not poisonous.

  He walked slowly away from the ship, feeling his balance in this alien gravity and accustoming himself to the weight of his equipment. Besides the usual communication and recording gear, he was carrying nets, small boxes for specimens, a geologist's hammer, a compact explosive powered drill, and a coil of thin but immensely strong rope. And though he had no offensive weapons, he had some extremely effective defensive ones. The land through which he was walking seemed absolutely barren of animal life, but he knew that this was an illusion. Thousands of eyes were watching him from trees and grass and undergrowth, and as he moved slowly along one of the trails which the herbivores had beaten to the waterhole, he was also conscious that the normal patterns of sound had changed. The creatures of this world knew that something strange had come into their lives, there was a hushed expectancy about the land-a subdued excitement that communicated itself to Clindar. He did not anticipate trouble, or danger; but if it came, he was ready for it.

  He had already chosen his vantage point, a large rock about a hundred yards from the watering place where the hominid had been killed. Near the summit was a cave formed by two boulders resting against each other, it would provide just the shelter and concealment he needed. Such a desirable residence was not, of course, empty, it contained several large, indignant, and undoubtedly poisonous snakes. He ignored them, since they could not harm him through the tough yet almost invisible envelope of his suit.

  He set up his cameras and his directional microphones, reported back to the ship, and waited.

  For the first few days he merely observed without interference. He learned the order in which the various animals came to the water, until he could predict their arrival with fair accuracy. Above all, he studied the little group of hominids, until he knew them as individuals and had christened them all with appropriate private names. There was Greypate, the oldest and most aggressive, who dominated all the others. There were Crookback and One-Hand and Broken-Fang, but the most interesting was the young adult that Clindar had called Moon-Watcher, because he had once spotted him at dusk, standing on a low rock and staring motionless into the face of the rising moon. The posture itself was unusual, for the hominids seldom stood erect for more than a few seconds at a time, but even more striking was the suggestion of conscious thought and wonder. Perhaps this was an illusion; yet Clindar doubted if any other inhabitant of this world ever stopped to stare at the moon. Nor was it, in this environment, a very sensible thing to do. Clindar was strangely relieved when the creature started to trot back toward its cave, away from the unsleeping perils of the night.

  His first attempt to collect specimens was not a success. A small antelope, with graceful, corkscrew horns, had apparently become detached from the herd and was wandering along the trail to the waterhole in a rather distracted manner. Clindar got it in the sight of his narcotic gun, aimed carefully at the fleshy part of the flank, and squeezed the trigger. With barely a sound, the dart whispered to its target.

  The antelope started, though no more violently than if a mosquito had bitten it. For a moment there was no other reaction-but the biochemists had done their work well. The animal walked three or four paces, and then collapsed in a heap.

  Clindar hurried out of the cave to collect his victim. He was halfway down the sloping rockface when there was a flash of yellow, and almost before he had realized what had happened, the antelope was gone. A passing leopard had outsmarted an intelligence that could span the Galaxy.

  Some hunters would have cursed; Clindar merely laughed and went back to his cave. Two hours later, he shot Moon-Watcher.

  He reached the fallen hominid only seconds after the flying dart. Beneath its hairy pelt the body was well muscled but undernourished, he had no difficulty at all in lifting it and carrying it back to the ship, where a thorough examination could be made.

  Moon-Watcher was still unconscious, but breathing steadily, when the elevator took him up into the ship. He slept peacefully in the sealed test chamber for many hours, while scores of instruments measured his reactions and beams of radiation scanned the interior of his body as if it had been made of glass. His head was shaved, with considerable difficulty, for the hair was a matted and well-populated tangle, and electrodes were attached to his scalp. In the mother ship, thousands of miles above the earth, the great computers probed and analyzed the patterns of cerebral activity, so much simpler than their own; and presently they delivered their verdict.

  When it was all finished, Clindar carried Moon Watcher back to the elevator and down to ground level. He left him still unconscious, propped up against one of the landing legs, and guarded him from the ship until he had come to his senses. He would have done the same with any other animal; centuries of traveling through the empty wastes of the universe had given him an intense reverence for life in all its forms. Though he never hesitated to kill when it was necessary, he always did so with reluctance.

  Presently Moon-Watcher stirred drowsily, scratched his newly bared scalp with obvious astonishment, and staggered to his feet. He proceeded for a few yards in a wavering line, then became aware of the ship looming above him, and stopped to examine it. Perhaps he thought it was some peculiar kind of rock, for he showed no signs of alarm. After a few minutes, now much steadier, he set off briskly in the direction of his cave, and soon disappeared from view.

  When the intelligence profiles and brain-capacity assessments came down from the mother ship, Clindar brooded over them for a long time, discussed them with his colleagues, and asked the computers far overhead for their extrapolations into the future. There was potential here- several billion brain cells, as yet only loosely interconnected. Whether that potential could ever be realized depended on time and luck. Time could not be hurried; but luck was not altogether beyond the power of intelligent control.

  Here was a situation common in the history of stellar exploration, though it was new to Clindar himself. Often the ships of his people had arrived at a world where some creature was at the watershed between instinct and conscious thought, and in the early days there had been much debate about the appropriate action. Some argued that it was better to stand aside and to leave the ultimate decision to chance and nature; but when this was done, the result was almost always the same. The universe was as indifferent to intelligence as it was to life
, left to themselves, the dawning minds had less than one chance in a hundred of survival. Most of them achieved no more than a tragic consciousness of their own doom, before they were swept into oblivion.

  In these circumstances, the choice was clear-though not all races would have been sufficiently unselfish to make it. When an emerging species could be helped, aid was given. But too much assistance could also be fatal, and it was necessary to aim for a minimum of interference, lest the rising culture become no more than a distorted echo of an alien society.

  For in the long run a species, like an individual, had to stand on its own feet, and find its own destiny. Clindar was very well aware of this, as he studied the hominids and prepared to play God.

  There had been a heavy rainstorm, and the world around him was tantalizingly fresh and sparkling beyond the impermeable barrier of his suit. On such a morning, it seemed a crime to kill, nor was there any exoneration in the knowledge that thousands of hidden deaths were occurring every minute in this shining land.

  The hunter from the stars stood at the edge of the Savannah, choosing his victim. Out to the horizon he could see uncountable numbers of gazelles and antelopes and wildebeest and zebras-or creatures whose descendants would one day bear these names-browsing on the sea of grass. He raised his weapon to his shoulder, aimed through it like a telescope, and pressed the firing stud. There was a flicker of light, barely visible in the fierce glare of the African sun, and a young gazelle dropped so swiftly and silently that none of its companions took the slightest notice. Even when Clindar walked out to collect the body-unmarked except for the charred hole above the heart-they trotted only a few yards away and regarded him with only mild alarm.

  He threw the gazelle over his shoulder and set off at a brisk walk toward the cave of the hominids. Before he had gone three hundred yards he realized, with some amusement, that he was being stalked by a saber-toothed tiger that had emerged from the undergrowth at the edge of the plain.

  He put down the gazelle and turned to face the great cat. When it saw that he was aware of it, the tiger growled softly and opened its jaws in a terrifying display of fangs. At the same moment, it quickened its pace.

  Clindar also wasted no time. He threw a switch on his suit, and at once the air was rent by a hideous, undulating howl as of a thousand souls in torment. Out on the plain, the flocks of herbivores began to stampede, and even above the cacophony of the siren he could hear the drumming of their hooves like a distant thunder.

  The tiger reared up on its haunches, slashing viciously at the empty air in its surprise. Then it dropped back to the ground and, to Clindar's utter astonishment, continued its advance. It was very brave, or very stupid, or very hungry. In any event, it was very dangerous.

  Clindar whipped his projector into the firing position, and barely had time to defocus it before the tiger charged. This time there was no visible flash, for the beam fanned out over too wide an area to produce its characteristic scintillation. But when the tiger reached the ground it was already blind, for it had stared into the light of a hundred suns. Clindar had no difficulty in avoiding it as it staggered away, shaking its massive head from side to side in confusion.

  It would be at least an hour before the magnificent beast's sight returned to normal; as it tottered away, Clindar hoped that it would not injure itself by crashing into any obstacles.

  There were no more interruptions in his morning walk, and presently, not even winded by his exertions, he arrived at the cliff face where the hominids lived. Keeping in full view, and making as much noise as possible, he placed his offering immediately beneath the opening of the cave. Then he moved back a hundred yards, sat down, and waited with the patience of a being who had already seen a thousand birthdays and could, if he wished, see endless thousands more.

  There must, he knew, be many eyes watching him from the darkness of the cave, and behind those eyes would be dim brains in which fear and hunger strove together. It would be rare indeed for the hominids to encounter such a windfall as this, for the gazelles could outrun them easily and they had not yet invented any of the arts of the hunter.

  It was a full hour before the oldest of the males appeared in the shadows of the opening, started outside for a few seconds and then disappeared again into the gloom. Nothing else happened for another hour or so then Clindar's friend Moon-Watcher emerged, looked around nervously, and started to descend the face of the cliff. He scuttled across to the dead gazelle, which was now surrounded by a cloud of buzzing flies, and paused here for a moment, obviously torn with agonizing indecision.

  Clindar could read the creature's mind with the utmost ease. Shall I feast here, it was saying to itself, and risk being eaten myself-or shall I carry this banquet back to the safety of the cave-where I will have to share it with the others?

  Moon-Watcher solved his excruciating problem by a compromise. He buried his fangs in the neck of the gazelle, and with great difficulty, tore out a hunk of bloody meat. Then he threw the corpse over his shoulder and swarmed up the rockface with quite astonishing speed.

  Lesson one was over. Feeling very satisfied, Clindar went back to the ship. He did not expect that the hominids would leave the cave again that day.

  Seven gazelles and two antelopes later, he had made considerable progress. When he left his present at the foot of the cliff, the whole family would emerge and quarrel over it. Their table manners left much to be desired, but they were beginning to take him for granted. Though he sat in full view, a strange and utterly alien figure in his shimmering protective envelope, they appeared quite unafraid of him. Every day he had moved a little closer, until now he sat within fifty feet of the dining place.

  Before the hominids became completely dependent upon him, and forgot how to fend for themselves, he would take the next step.

  GIFT FROM THE STARS

  Jupiter was a brilliant star, almost vertically above him, as Clindar walked through the sleeping bush an hour before dawn. Up there, half a billion miles away, was the entrance of the Star Gate, and the road across the light-years that led to his infinitely more distant home. It was a road with many branches, most of them still unexplored and leading to destinations which were perhaps unimaginable. Down a few of those byways were the lonely civilizations scattered so sparsely throughout this arm of the galactic spiral. One day this world might be among them; but that time could not come for at least a million years.

  The hominids never left their cave during the hours of darkness, but Clindar could hear them barking and quarreling sleepily as they prepared to meet the new day. He placed his bribe-a young boar-at the foot of the cliff, where they were bound to pass. This time, however, he did not withdraw. He sat down only a few feet away from the sacrifice, and waited.

  The stars faded from the sky, Jupiter last of all. Presently the rays of the rising sun began to gild the face of the cliff, moving slowly downward until they shone straight into the cave. Then, from the interior, came a sudden excited chattering, and the high-pitched "EekEek" which Clindar had grown to recognize as an alarm signal. The hominids had spotted him.

  He could see their hairy figures milling around in the entrance, undecided what to do next. If they did not pluck up enough courage to come down in a reasonable time, Clindar would leave. But he would take the boar with him, and hope that they would draw the conclusion that food and friendship were inseparably linked.

  To his pleased surprise he did not have long to wait. Moving slowly but steadily, Moon- Watcher was descending the face of the cliff. He got to within twenty feet of ground level and then paused to survey the situation. Presumably he still felt quite confident that he was safe, and in ordinary circumstances he would have been right. Only a nimble ape, and not one of the great cats, would be able to scale this almost vertical rock.

  Clindar pulled a knife from his equipment belt, and, with rather more energy than skill, started to disjoint the boar. It must, he thought, look like magic to MoonWatcher to see how swiftly the tough meat came a
part; he was performing in a few seconds acts which took the hominids many minutes of tearing and biting. When he had detached a foreleg, he held it out to his fascinated spectator.

  He was patient, and Moon-Watcher was hungry, but the result was not inevitable. For many minutes the creature hovered hesitantly on the face of the cliff, descending a few feet, then hastily scrambling upward again. At last it made its decision, and gathered all its courage together. Still prepared for instant flight, Moon-Watcher dropped from the face of the cliff and started to sidle towards Clindar, approaching him in a cautious, crab-wise manner. Every few steps he stood upright for a second, grimacing and showing his teeth. He was obviously trying to demonstrate that he could defend himself if the need arose.

  It took him several minutes, with numerous retreats and hesitations, to cross the last few feet. While he was doing this, Clindar pretended to chew avidly at the leg of boar, holding it out invitingly from time to time.