I am afraid I was prepared to abandon ship before he was; but I admired him for his tenacity, even when I wished it was not focused upon me.

  Matters came to a climax in the summer of 1966, and I find this pathetic entry in my log:

  July 19. Almost all memory of the weeks of work at the Hotel Chelsea seems to have been obliterated, and there are versions of the book that I can hardly remember. I've lost count (fortunately) of the revisions and blind alleys. It's all rather depressing-I only hope the ultimate result ii worth it.

  The reason for this gloom was understandable. Stanley had refused to sign the contract-after Delacorte had set the book in type and taken an impressive two-page advertisement in Publisher's Weekly. He still argued that he wasn't satisfied with the manuscript and wanted to do some more work on it. I considered writing to Dr. Leakey to get the name of a good witchdoctor, and Scott Meredith bought some pins and wax. Delacorte and Co., fighting back corporate tears, broke up the type. I have always felt extremely grateful to them for their forbearance in this difficult matter, and am happy to have given them a modest best seller in Time Probe.

  It was just as well that no one dreamed that another two years would pass before the book was finally published, by New American Library in the summer of 1968 -months after the release of the movie. In the long run, everything came out all right-exactly as Stanley had predicted.

  But I can think of easier ways of earning a living.

  THE DAWN OF MAN

  During November 1950 I wrote a short story about a meeting in the remote past between visitors from space and a primitive ape-man. An editor at Ballantine Books gave it the ingenious title "Expedition to Earth" when it was published in the book of that name, but I prefer "Encounter in the Dawn." However, when Harcourt, Brace and World brought out my own selection of favorites, The Nine Billion Names of God, it was mysteriously changed to "Encounter at Dawn." There the matter rests at present.

  Though "Encounter" was not one of the half-dozen stories originally purchased by Stanley, it greatly influenced my thinking during the early stages of our enterprise. At that time-and indeed until very much later-we assumed that we would actually show some type of extraterrestrial entity, probably not too far from the human pattern. Even this presented frightful problems of makeup and credibility.

  The make-up problems could be solved-as Stuart Freeborn later showed with his brilliant work on the ape-men. (To my fury, at the 1969 Academy Awards a special Oscar was presented for make-up to Planet of the Apes! I wondered, as loudly as possible, whether the judges had passed over 2001 because they thought we used real apes.) The problem of credibility might be much greater, for there was danger that the result might look like yet another monster movie. After a great deal of experimenting the whole issue was sidestepped, both in the movie and the novel, and there is no doubt that this was the correct solution.

  But before we arrived at it, it seemed reasonable to show an actual meeting between ape-men and aliens, and to give far more details of that encounter in the Pleistocene, three million years ago. The chapters that follow were our first straightforward attempt to show how apemen might be trained, with patience, to improve their way of life.

  It was part of Stanley's genius that he spotted what was missing in this approach. It was too simpleminded; worse than that, it lacked the magic he was seeking, as he explained in item 24 of his memorandum, quoted earlier.

  In the novel, we were finally able to get the effect we wanted by cutting out the details and introducing the super-teaching machine, the monolith-which, even more important, provided the essential linking theme between the different sections of the story. In the film, Stanley was able to produce a far more intense emotional effect by the brilliant use of slow-motion photography, extreme closeups, and Richard Strauss's Zarathustra. That frozen moment at the beginning of history, when Moon-Watcher, foreshadowing Cain, first picks up the bone and studies it thoughtfully, before waving it to and fro with mounting excitement, never fails to bring tears to my eyes.

  And it hit me hardest of all when I was sitting behind U Thant and Dr. Ralph Bunche in the Dag Hammarskjold Theater, watching a screening which we had arranged at the Secretary General's request. This, I suddenly realized, is where all the trouble started-and this very building is where we are trying to stop it. Simultaneously, I was struck by the astonishing parallel between the shape of the monolith and the UN Headquarters itself; there seemed something quite uncanny about the coincidence. If it is one....

  The skull-smashing sequence was the only scene not filmed in the studio; it was shot in a field, a couple of hundred yards away-the only time Stanley went on location. A small platform had been set up, and MoonWatcher (Dan Richter) was sitting on this, surrounded by bones. Cars and buses were going by at the end of the field, but as this was a low-angle shot against the sky they didn't get in the way-though Stanley did have to pause for an occasional airplane.

  The shot was repeated so many times, and Dan smashed so many bones, that I was afraid we were going to run out of wart-hog (or tapir) skulls. But eventually Stanley was satisfied, and as we walked back to the studio he began to throw bones up in the air. At first I thought this was sheer joi de vivre, but then he started to film them with a hand-held camera-no easy task. Once or twice, one of the large, swiftly descending bones nearly impacted on Stanley as he peered through the viewfinder; if luck had been against us the whole project might have ended then. To misquote Ardrey (page 34), "That intelligence would have perished on some forgotten Elstree field."

  When he had finished filming the bones whirling against the sky, Stanley resumed the walk back to the studio; but now he had got hold of a broom, and started tossing that up into the air. Once again, I assumed this exercise was pure fun; and perhaps it was. But that was the genesis of the longest flash-forward in the history of movies-three million years, from bone club to artificial satellite, in a twenty-fourth of a second.

  [At one time we had intended not a flash-forward but a flashback; I had quite forgotten this, until I noticed that the four chapters that follow were originally numbered 35 to 38. It seems more logical, and certainly less confusing, to reproduce them here, so giving this book the same structure as the novel-and the movie.]

  FIRST ENCOUNTER

  The glaciers had retreated now, and the shapes of the continents were much as Man would know them, when he made his first maps three millions years hence. There were, of course, minor differences, the British Isles still formed part of Europe, and the causeway between Asia and America had not yet crumbled into the islands of the Bering Strait. And the Mediterranean valley was still unflooded; the Pillars of Hercules would stand fast for ages yet, before the ocean broke through and the false, sweet legend of Atlantis was born.

  And just what creatures will this world hold? asked Clindar as he looked down upon the turning globe. The great ship had come through the Star Gate only a few hours before, and the excitement of planetfall was still upon all its crew. Every world was a new challenge, a new problem, with its endless possibilities of life and death- and its hope of companionship in this still achingly empty universe.

  In the five centuries since he had left Eos, Clindar had walked on thirty worlds, and devoted at least ten years of his life to each. On two he had suffered minor deaths, but this was one of the inevitable hazards of exploration. He expected to die many times again before he returned to his native world, now a thousand light-years away in normal space. As long as his body was not totally destroyed, the doctors could always repair it.

  Apart from their unusual height-more than seven feet- the creatures looking down upon the world of the Pliocene were strikingly human; far more human, indeed, than anything that yet walked on the planet below. Only if one examined them in detail was it obvious that they belonged to an entirely different evolutionary tree; Nature had rung the changes once again on one of her favorite designs.

  There are millions of two-armed, upright, biped races in the universe. Thousa
nds of them, on a dark night or in a thick fog, might be mistaken for human beings. But there are only a few hundred species who could mingle undetected in the society of man-and none at all that could pass even the most superficial medical examination.

  With a little plastic surgery, Clindar could have passed as a man. He was hairless, and there were no nails on his six fingers and toes; these stigmata of the primitive jungle his race had lost eons ago. Despite his size, he moved swiftly, with a jerky, almost avian walk and rhythm. He thought and spoke more quickly than any man would ever do, and his normal body temperature was almost 105 degrees. His skeleton and his biochemistry were utterly inhuman, and any cannibals foolish enough to feast upon his flesh would surely die. Yet despite all this, one would have to search a million worlds to find a closer approximation to a man.

  And, like Man, he and his companions were insatiably inquisitive. Now that they had the power to explore the universe, they would enjoy it to the full.

  The maps, the photographic surveys, the spectrochemical analyses, were all completed. After a year in orbit, it was time to land. Like a stick of bombs, ten glittering spheres were ejected from the thousand-foot-long mother ship, and fell toward the cloud-wrapped globe below.

  They drifted apart, spread themselves out along the equator, and settled gently on mountain, plain, and swamp. Clindar and his two companions floated for miles across the jungles before they saw a good landing place; then the sphere extended its three telescopic legs and came to rest as delicately as a falling soap bubble, upon the land that would one day be named Africa.

  For a moment no one spoke; each wanted to savor this moment in silence. The three of them, as was usually the case on such expeditions, were all members of the same mating group, so neither their bodies nor their minds held any secrets from each other. This was their fifth landing together, and silence united them more closely than any words.

  At last, Clindar touched the control panel, and into the cabin came the sounds of the new world. For a long time they listened to the voices of the forest, to the sighing of the wind through the strange trees and grasses, to the cries of animals killing or being killed-and a changeless background of muted thunder, the roar of the great waterfall two miles away. One day they would know every thread in this tapestry of sound; but now it was full of menace, and woke forgotten fears. For all their wisdom and sophistication, they felt like children facing the unknown terrors of the night; and their hearts ached for home.

  The familiar routines of the landing procedure soon turned them back into calm, professional explorer scientists. First the little collection robots were sent rolling in all directions, to gather leaves and grasses and, with luck, any small animals slow-moving enough to be caught. All the samples they brought back were examined in the scoutship's sealed and automatic lab, so that there was no danger of contamination. The biochemical patterns were swiftly evaluated-it was rare to find a wholly novel one, especially on an oxygen-carbon world like this-and the information flashed up to the hovering mother ship, twenty thousand miles away. There seemed to be no virulently hostile microorganisms here, but life was of such infinite complexity that one could never be sure. Planets could produce deadly surprises, generations after they had been declared completely safe.

  No large animals came near the ship during the hours of daylight which was not surprising, for it stood in several acres of open ground where the only cover was a few low bushes. But at dusk, the picture changed, and the land became alive as the shadows lengthened and deepened into night.

  To the watchers on the ship, darkness was no handicap. Through the infrared periscope they could see the world around them as if it were still daylight; they could follow the shy herbivores on their way to the waterholes, and could study the tactics of the great predators who hunted them. There were still tigers in this land, with twin sabers jutting from their jaws; but in another million years they would be gone, and Africa would belong to the lion.

  It was slow, sometimes exasperating, but always fascinating work-making a census of a world one could not touch. Several times Clindar moved the ship a few miles to change the vantagepoint, and to make sure that the animals and plants formed a representative sample. And in the second week, they found the hominids. It was the din through the long-distance microphones that drew attention to them. As Clindar swung the periscope in the direction of the uproar, he found that his view of the disturbance was partly blocked by trees, but he could see enough to make it unnecessary to move the ship.

  About half a mile away, in a small clearing near the bank of an almost dried-up river, a leopard had made a kill. It was crouched over some unfortunate victim who had presumably been drinking at the water's edge, and was snarling angrily at a hostile chorus from the surrounding trees. There were dark, shadow animals of fair size moving through the branches of those trees, and it was some time before Clindar could get a good view of one. But suddenly, as he tracked through the foliage, he came upon a clear line of sight-and looked straight into a hairy caricature of his own face.

  The creature was screaming with rage as it danced up and down on the tree limb, directing its fury at the leopard. On other branches, its companions were doing the same, and though they could not harm the killer they were obviously annoying it, for presently the big cat started to move away, dragging the bloody carcass of its victim by the leg. As the body rolled over, Clindar found himself once again looking into the distorting mirror of time.

  He had seen the reconstructions of his own ancestors, five or ten million years ago; the mask now stiffening into a grimace of death might have belonged to any one of them. There was the same low, ridged forehead, close-set eyes, muscular but chinless jaw, protruding teeth. It was not the first time he had met this pattern, for variations of it were common on many worlds, yet it always filled him with wonder, and with a sense of kinship that spanned the evolutionary gulfs.

  The leopard and its victim vanished from view; the chorus of fear and anger died away. Clindar watched, and waited.

  Slowly and cautiously, the hominids came down from the trees, in which they did not seem to be completely at home. They walked on all fours, but from time to time reared up on their hind limbs and took several steps in an upright position. Abruptly, as if they had spotted the leopard again, they all fled in panic, away from the river and the trees. As they ran, they became true bipeds, covering considerable distances without their forelimbs touching the ground.

  Clindar followed them with some difficulty, and at first thought he had lost them. Then he spotted their brown figures swarming up the almost vertical face of a sandstone cliff, heading for a cave some fifty feet from the ground. It was a well-chosen refuge, for the entrance was too high to be reached by the great cats. Such a choice of dwelling place might be instinctive, but it might also indicate the dawn of intelligence. These creatures, Clindar told himself with mounting excitement, would certainly merit watching.

  Through long but fascinating hours at the periscope, he grew to know them all, and to learn the pattern of their behavior. There were only ten of them-four males, three females, three infants-and physically they were unimpressive specimens, living always on the edge of hunger. Most of their food was obtained by foraging among grasses and shrubs, but they were not exclusively vegetarian. They ate meat whenever they could get it, which was seldom, for they were inefficient hunters. About the only animals that fell prey to them were tortoises, small rodents, and occasional fish that they could catch in the shallows of the river.

  Because they did not possess the simplest tools, they could not even take proper advantage of such rare and accidental windfalls as a mired elephant, or an antelope that had broken its leg. The meat would rot before they could tear it all out with their teeth; and they could not fight off the big carnivores that would be attracted to such a feast.

  It was a wonder that they had survived, and their future did not look promising. Clindar was not in the least surprised when one of the infants died, ap
parently of starvation, and the little body was thrown out of the cave for the hyenas to carry away. These creatures had not yet learned the useful accomplishment of burying their dead, lest they lead wild animals to the living.

  But Clindar, with the experience of many worlds behind him, knew that appearances could be deceptive. These unprepossessing near-apes had one great advantage over all the other creatures of their planet. They were still unspecialized; they had not yet become trapped in any evolutionary cul-de-sac. Almost every animal could beat them in some respect-in strength, or speed, or hearing, or natural armament. There was no single skill in which the hominids excelled, but they could do everything after a fashion. Where the other animals had become virtuosos, they had specialized in a universal mediocrity-and therein, a million years hence, might lie their salvation. Having failed to adapt themselves to their environment, they might yet one day change it to suit their own desires.

  Other humanoid races, times without number, had taken a different road. Clindar had seen, either with his own eyes or through the records of other explorers, those who had chosen to specialize-though the choice, of course, was never a conscious one. He had seen near-men who could run like the wind, swim like fish, hunt in the dark with sonar or infrared senses; on one world of exceptionally low gravity he had even encountered men who could fly. Most of these specialists had been extremely successful; so successful that they had had no need to develop more than a rudimentary intelligence.