"It will be another six days before the Earth can be brought up to critical mass," Frisch muttered. "And the bores are virtually here. Rotate your ears. You'll hear them."

  Lemuel and Dr. Weller did so. At once, a confusing babble of human voices came to them. A chaotic clang of sound, from a number of bores con­verging on the two terminal bubbles.

  "Perfectly ordinary humans!" Lemuel gasped. "I can tell by the sound!"

  "We're trapped!" Weller grabbed up a blaster, and Frisch did so, too. All the Null-O's were arming themselves. Work was forgotten. With a shattering roar the snout of a bore burst through the ground and aimed itself directly at them. The Null-O's fired wildly; they scattered and fell back toward the tower.

  A second bore appeared, and then a third. The air was alive with blazing beams of energy, as the Null-O's fired and the humans fired back. The humans were the most common possible, a variety of laborers taken subsur­face by their employers. The lower forms of human life: clerks, bus drivers, day-laborers, typists, janitors, tailors, bakers, turret lathe operators, shipping clerks, baseball players, radio announcers, garage mechanics, policemen, necktie peddlers, ice cream vendors, door-to-door salesmen, bill collectors, receptionists, welders, carpenters, construction laborers, farmers, politi­cians, merchants -- the men and women whose very existence terrified the Null-O's to their core.

  The emotional masses of ordinary people who resented the Great Work, the bombs and bacteria and guided missiles, were coming to the surface. They were rising up -- finally. Putting an end to super-logic: rationality without responsibility.

  "We haven't a chance," Weller gasped. "Forget the towers. Get the ship to the surface."

  A salesman and two plumbers were setting fire to the terminal. A group of men in overalls and canvas shirts were ripping down the wiring. Others just as ordinary were turning their heat guns on the intricate controls. Flames licked up. The terminal tower swayed ominously.

  The Venus ship appeared, lifted to the surface by an intricate stage-sys­tem. At once the Null-O's poured into it, in two efficient lines, all of them controlled and integrated as the crazed human beings decimated their ranks.

  "Animals," Weller said sadly. "The mass of men. Mindless animals, domi­nated by their emotions. Beasts, unable to see things logically."

  A heat beam finished him off, and the man behind moved forward. Finally the last remaining Null-O was aboard, and the great hatches slammed shut. With a thunderous roar the jets of the ship opened, and it shot through the bubble into the sky.

  Lemuel lay where he had fallen, when a heat beam, wielded by a crazed electrician, had touched his left leg. Sadly, he saw the ship rise, hesitate, then crash through and dwindle into the flaming sky. Human beings were all around him, repairing the damaged protection bubble, shouting orders and yelling excitedly. The babble of their voices beat against his sensitive ears; feebly, he put his hands up and covered them.

  The ship was gone. He had been left behind. But the plan would continue without him.

  A distant voice came to him. It was Dr. Frisch aboard the Venus ship, yelling down with cupped hands. The voice was faint, lost in the trackless miles of space, but Lemuel managed to make it out above the noise and hub­bub around him.

  "Goodbye... We'll remember you --"

  "Work hard!" the boy shouted back. "Don't give up until the plan is com­plete!"

  "We'll work..." The voice grew more faint. "We'll keep on..." It died out, then returned for a brief instant. "We'll succeed..." And then there was only silence.

  With a peaceful smile on his face, a smile of happiness and contentment, satisfaction at a job well done, Lemuel lay back and waited for the pack of irrational human animals to finish him.

  To Serve the Master

  Applequist was cutting across a deserted field, up a narrow path beside the yawning crack of a ravine, when he heard the voice.

  He stopped frozen, hand on his S-pistol. For a long time he listened, but there was only the distant lap of the wind among the broken trees along the ridge, a hollow murmuring that mixed with the rustle of the dry grass beside him. The sound had come from the ravine. Its bottom was snarled and debris-filled. He crouched down at the lip and tried to locate the voice.

  There was no motion. Nothing to give away the place. His legs began to ache. Flies buzzed at him, settled on his sweating forehead. The sun made his head ache; the dust clouds had been thin the last few months.

  His radiation-proof watch told him it was three o'clock. Finally he shrugged and got stiffly to his feet. The hell with it. Let them send out an armed team. It wasn't his business; he was a letter carrier grade four, and a civilian.

  As he climbed the hill toward the road, the sound came again. And this time, standing high above the ravine, he caught a flash of motion. Fear and puzzled disbelief touched him. It couldn't be -- but he had seen it with his own eyes. It wasn't a newscircular rumor.

  What was a robot doing down in the deserted ravine? All robots had been destroyed years ago. But there it lay, among the debris and weeds. A rusted, half-corroded wreck. Calling feebly up at him as he passed along the trail.

  The Company defense ring admitted him through the three-stage lock into the tunnel area. He descended slowly, deep in thought all the way down to the organizational level. As he slid off his letter pack Assistant Supervisor Jenkins hurried over.

  "Where the hell have you been? It's almost four."

  "Sorry." Applequist turned his S-pistol over to a nearby guard. "What are the chances of a five hour pass? There's something I want to look into."

  "Not a chance. You know they're scrapping the whole right wing setup. They need everybody on strict twenty-four hour alert."

  Applequist began sorting letters. Most were personals between big-shot supervisors of the North American Companies. Letters to entertainment women beyond the Company peripheries. Letters to families and petitions from minor officials. "In that case," he said thoughtfully, "I'll have to go anyhow."

  Jenkins eyed the young man suspiciously. "What's going on? Maybe you found some undamaged equipment left over from the war. An intact cache, buried someplace? Is that it?"

  Applequist almost told him, at that point. But he didn't. "Maybe," he answered indifferently. "It's possible."

  Jenkins shot him a grimace of hate and stalked off to roll aside the doors of the observation chamber. At the big wall map officials were examining the day's activities. Half a dozen middle-aged men, most of them bald, collars dirty and stained, lounged around in chairs. In the corner Supervisor Rudde was sound asleep, fat legs stuck out in front of him, hairy chest visible under his open shirt. These were the men who ran the Detroit Company. Ten thou­sand families, the whole subsurface living-shelter, depended on them.

  "What's on your mind?" a voice rumbled in Applequist's ear. Director Laws had come into the chamber and, as usual, taken him unawares.

  "Nothing, sir," Applequist answered. But the keen eyes, blue as china, bored through and beneath. "The usual fatigue. My tension index is up. I've been meaning to take some of my leave, but with all the work..."

  "Don't try to fool me. A fourth-class letter carrier isn't needed. What are you really getting at?"

  "Sir," Applequist said bluntly, "why were the robots destroyed?"

  There was silence. Laws' heavy face registered surprise, then hostility. Before he could speak Applequist hurried on: "I know my class is forbidden to make theoretical inquiries. But it's very important I find out."

  "The subject is closed," Laws rumbled ominously. "Even to top-level personnel."

  "What did the robots have to do with the war? Why was the war fought? What was life like before the war?"

  "The subject," Laws repeated, "is closed." He moved slowly toward the wall map and Applequist was left standing alone, in the middle of the clicking machines, among the murmuring officials and bureaucrats.

  Automatically, he resumed sorting letters. There had been the war, and robots were involved in it. That
much he knew. A few had survived; when he was a child his father had taken him to an industrial center and he had seen them at their machines. Once, there had been more complex types. Those were all gone; even the simple ones would soon be scrapped. Absolutely no more were manufactured.

  "What happened?" he had asked, as his father dragged him away. "Where did all the robots go?"

  No answer then either. That was sixteen years ago, and now the last had been scrapped. Even the memory of robots was disappearing; in a few years the word itself would cease. Robots. What had happened?

  He finished with the letters and moved out of the chamber. None of the supervisors noticed; they were arguing some erudite point of strategy. Maneuvering and countermaneuvering among the Companies. Tension and exchanged insults. He found a crushed cigarette in his pocket and inexpertly lit up.

  "Dinner call," the passage speaker announced tinnily. "One hour break for top class personnel."

  A few supervisors filed noisily past him. Applequist crushed out his ciga­rette and moved toward his station. He worked until six. Then his dinner hour came up. No other break until Saturday. But if he went without dinner...

  The robot was probably a low-order type, scrapped with the final group. The inferior kind he had seen as a child. It couldn't be one of the elaborate war-time robots. To have survived in the ravine, rusting and rotting through the years since the war...

  His mind skirted the hope. Heart pounding, he entered a lift and touched the stud. By nightfall he'd know.

  The robot lay among heaps of metal slag and weeds. Jagged, rusted frag­ments barred Applequist's way as he move cautiously down the side of the ravine, S-gun in one hand, radiation mask pulled tight over his face.

  His counter clicked loudly: the floor of the ravine was hot. Pools of con­tamination, over the reddish metal fragments, the piles and masses of fused steel and plastic and gutted equipment. He kicked webs of blackened wiring aside and gingerly stepped past the yawning fuel-tank of some ancient machine, now overgrown with vines. A rat scuttled off. It was almost sunset. Dark shadows lay over everything.

  The robot was watching him silently. Half of it was gone; only the head, arms, and upper trunk remained. The lower waist ended in shapeless struts, abruptly sliced off. It was clearly immobile. Its whole surface was pitted and corroded. One eye-lens was missing. Some of its metal fingers were bent grotesquely. It lay on its back facing the sky.

  It was a war-time robot, all right. In the one remaining eye glinted archaic consciousness. This was not the simple worker he had glimpsed as a child. Applequist's breath hammered in his throat. This was the real thing. It was following his movements intently. It was alive.

  All this time, Applequist thought. All these years. The hackles of his neck rose. Everything was silent, the hills and trees and masses of ruin. Nothing stirred; he and the ancient robot were the only living things. Down here in this crack waiting for somebody to come along.

  A cold wind rustled at him and he automatically pulled his overcoat together. Some leaves blew over the inert face of the robot. Vines had crept along its trunk, twisted into its works. It had been rained on; the sun had shone on it. In winter the snow had covered it. Rats and animals had sniffed at it. Insects had crawled through it. And it was still alive.

  "I heard you," Applequist muttered. "I was walking along the path."

  Presently the robot said, "I know. I saw you stop." Its voice was faint and dry. Like ashes rubbing together. Without quality or pitch. "Would you make the date known to me? I suffered a power failure for an indefinite period. Wiring terminals shorted temporarily."

  "It's June 11," Applequist said. "2136," he added.

  The robot was obviously hoarding its meager strength. It moved one arm slightly, then let it fall back. Its one good eye blurred over, and deep within, gears whirred rustily. Realization came to Applequist: the robot might expire any moment. It was a miracle it had survived this long. Snails clung to its body. It was criss-crossed with slimy trails. A century...

  "How long have you been here?" he demanded. "Since the war?"

  "Yes."

  Applequist grinned nervously. "That's a long time. Over a hundred years."

  "That's so."

  It was getting dark fast. Automatically, Applequist fumbled for his flash­light. He could hardly make out the sides of the ravine. Someplace a long way off a bird croaked dismally in the darkness. The bushes rustled.

  "I need help," the robot said. "Most of my motor equipment was destroyed. I can't move from here."

  "In what condition is the rest of you? Your energy supply. How long can --"

  "There's been considerable cell destruction. Only a limited number of relay circuits still function. And those are overloaded." The robot's one good eye was on him again. "What is the technological situation? I have seen air­borne ships fly overhead. You still manufacture and maintain electronic equipment?"

  "We operate an industrial unit near Pittsburgh."

  "If I describe basic electronic units will you understand?" the robot asked.

  "I'm not trained in mechanical work. I'm classed as a fourth grade letter carrier. But I have contacts in the repair department. We keep our own machines functioning." He licked his lips tensely. "It's risky, of course. There are laws."

  "Laws?"

  "All robots were destroyed. You are the only one left. The rest were liqui­dated years ago."

  No expression showed in the robot's eye. "Why did you come down here?" it demanded. Its eye moved to the S-gun in Applequist's hand. "You are a minor official in some hierarchy. Acting on orders from above. A mechani­cally-operating integer in a larger system."

  Applequist laughed. "I suppose so." Then he stopped laughing. "Why was the war fought? What was life like before?"

  "Don't you know?"

  "Of course not. No theoretical knowledge is permitted, except to top-level personnel. And even the Supervisors don't know about the war." Apple­quist squatted down and shone the beam of his flashlight into the darkening face of the robot. "Things were different before, weren't they? We didn't always live in subsurface shelters. The world wasn't always a scrap heap. People didn't always slave for their Companies."

  "Before the war there were no Companies."

  Applequist grunted with triumph. "I knew it."

  "Men lived in cities, which were demolished in the war. Companies, which were protected, survived. Officials of these Companies became the government. The war lasted a long time. Everything of value was destroyed. What you have left is a burned-out shell." The robot was silent a moment and then continued, "The first robot was built in 1979. By 2000 all routine work was done by robots. Human beings were free to do what they wanted. Art, science, entertainment, whatever they liked."

  "What is art?" Applequist asked.

  "Creative work, directed toward realization of an internal standard. The whole population of the earth was free to expand culturally. Robots main­tained the world; man enjoyed it."

  "What were cities like?"

  "Robots rebuilt and reconstructed new cities according to plans drawn up by human artists. Clean, sanitary, attractive. They were the cities of gods."

  "Why was the war fought?"

  The robot's single eye flickered. "I've already talked too much. My power supply is dangerously low."

  Applequist trembled. "What do you need? I'll get it."

  "Immediately, I need an atomic A pack. Capable of putting out ten thou­sand f-units."

  "Yes."

  "After that, I'll need tools and aluminum sections. Low resistance wiring. Bring pen and paper -- I'll give you a list. You won't understand it, but some­one in electronic maintenance will. A power supply is the first need."

  "And you'll tell me about the war?"

  "Of course." The robot's dry rasp faded into silence. Shadows flickered around it; cold evening air stirred the dark weeds and bushes. "Kindly hurry. Tomorrow, if possible."

  "I ought to turn you in," Assistant Superv
isor Jenkins snapped. "Half an hour late, and now this business. What are you doing? You want to get fired out of the Company?'

  Applequist pushed close to the man. "I have to get this stuff. The -- cache is below surface. I have to construct a secure passage. Otherwise the whole thing will be buried by falling debris."

  "How large a cache is it?" Greed edged suspicion off Jenkins' gnarled face. He was already spending the Company reward. "Have you been able to see in? Are there unknown machines?"

  "I didn't recognize any," Applequist said impatiently. "Don't waste time. The whole mass of debris is apt to collapse. I have to work fast."

  "Where is it? I want to see it!"

  "I'm doing this alone. You supply the material and cover for my absence. That's your part."

  Jenkins twisted uncertainly. "If you're lying to me, Applequist --"

  "I'm not lying," Applequist answered angrily. "When can I expect the power unit?"

  "Tomorrow morning. I'll have to fill out a bushel of forms. Are you sure you can operate it? I better send a repair team along with you. To be sure --"

  "I can handle it." Applequist interrupted. "Just get me the stuff. I'll take care of the rest."

  Morning sunlight filtered over the rubble and trash. Applequist nervously fitted the new power pack in place, screwed the leads tight, clamped the corroded shield over it, and then got shakily to his feet. He tossed away the old pack and waited.

  The robot stirred. Its eye gained life and awareness. Presently it moved its arm in exploratory motions, over its damaged trunk and shoulders.

  "All right?" Applequist demanded huskily.

  "Apparently." The robot's voice was stronger; full and more confident. "The old power pack was virtually exhausted. It was fortunate you came along when you did."

  "You say men lived in cities," Applequist plunged in eagerly. "Robots did the work?"