Aristotle and the Gun
Astounding Science Fiction – February 1958
(1958)
L. Sprague de Camp

It would, obviously, be of immense advantage to modern people, if Science had just gotten started a thousand or so years earlier.

Obviously ...

-

From: Sherman Weaver, Librarian 
The Palace
Paumanok, Sewanhaki 
	Sachimate of Lenape 
	Flower Moon 3, 3097

To:
	Messire Markos Koukidas
	Consulate of the Balkan Commonwealth
	Kataapa, Muskhogian Federation

My dear Consul:

	You have no doubt heard of our glorious victory at Ptaksit, when our noble Sachim destroyed the armored chivalry of the Mengwe by the brilliant use of pikemen and archery. (I suggested it to him years ago, but never mind.) Sagoyewatha and most of his Senecas fell, and the Oneidas broke before our countercharge. The envoys from the Grand Council of the Long House arrive tomorrow for a peace-pauwau. The roads to the south are open again, so I send you my long-promised account of the events that brought me from my own world into this one.

	If you could have stayed longer on your last visit, I think I could have made the matter clear, despite the language-difficulty and my hardness of hearing. But perhaps if I give you a simple narrative, in the order in which things happened to me, truth will transpire.

	Know, then, that I was born into a world that looks like this one on the map, but is very different as regards human affairs. I tried to tell you of some of the triumphs of our natural philosophers, of our machines and discoveries. No doubt you thought me a first-class liar, though you were too polite to say so.

	None the less, my tale is true, though for reasons that will appear I cannot prove it. I was one of those natural philosophers. I commanded a group of younger philosophers, engaged in a task called a project, at a center of learning named Brookhaven, on the south shore of Sewanhaki twenty parasangs east of Paumanok. Paumanok itself was known as Brooklyn, and formed part of an even larger city called New York.

	My project had to do with the study of space-time. (Never mind what that means but read on.) At this center we had learned to get vast amounts of power from sea water by what we called a fusion process. By this process we could concentrate so much power in a small space that we could warp the entity called space-time and cause things to travel in time as our other machines traveled in space.

	When our calculations showed that we could theoretically hurl an object back in time, we began to build a machine for testing this hypothesis. First we built a small pilot model. In this we sent small objects back in time for short periods. We began with inanimate objects, and then found that a rabbit or rat could also be projected without harm. The time-translation would not be permanent; rather it acted like one of these rubber balls the Hesperians play games with. The object would stay in the desired time for a period determined by the power used to project it and its own mass, and would then return spontaneously to the time and place from which it started.

	We had reported our progress regularly, but my chief had other matters on his mind and did not read our reports for many months. When he got a report saying that we were completing a machine to hurl human beings back in time, however, he awoke to what was going on, read our previous reports and called me in.

	"Sherm," he said, "I've been discussing this project with Washington, and I'm afraid they take a dim view of it." 

	"Why?" said I, astonished.

	"Two reasons. For one thing, they think you've gone off the reservation. They're much more interested in the Antarctic Reclamation Project and want to concentrate all our appropriations and brain power on it.

	"For another, they're frankly scared of this time machine of yours. Suppose you went back, say, to the time of Alexander the Great and shot Alexander before he got started? That would change all later history, and we'd go out like candles."

	"Ridiculous," I said.

	"Well, what would happen?"

	"Our equations are not conclusive but there are several possibilities. As you will see if you read Report No. 9, it depends on whether space-time has a positive or negative curvature. If positive, any disturbance in the past tends to be ironed out in subsequent history, so that things become more and more nearly identical with what they would have been anyway. If negative, then events will diverge more and more from their original pattern with time.

	"Now, as I showed in this report, the chances are overwhelmingly in favor of a positive curvature. However, we intend to take every precaution and make our first tests for short periods, with a minimum—

	"That's enough," said my superior, holding up a hand. "It's very interesting, but the decision has already been made."

	"What do you mean?"

	"I mean Project A-257 is to be closed down and a final report written at once. The machines are to be dismantled, and the group will be put to work on another project.

	"What?" I shouted. "But you can't stop us just when we're on the verge—"

	"I'm sorry, Sherm, but I can. That's what the AEC decided at yesterday's meeting. It hasn't been officially announced, but they gave me positive orders to kill the project as soon as I got back here."

	"Of all the lousy, arbitrary, benighted—"

	"I know how you feel, but I have no choice."

	I lost my temper and defied him, threatening to go ahead with the project anyway. It was ridiculous, because he could easily dismiss me for insubordination. However, I knew he valued my ability and counted on his wanting to keep me for that reason. But he was clever enough to have his cake and eat it.

	"If that's how you feel," he said, "the section is abolished here and now. Your group will be broken up and assigned to other projects. You'll be kept on at your present rating with the title of consultant. Then when you're willing to talk sense, perhaps we can find you a suitable job."

-

	I stamped out of his office and went home to brood. I ought now to tell you something of myself. I am old enough to be objective, I hope, and as I have but a few years left there is no point in pretense.

	I have always been a solitary, misanthropic man. I had little interest in or liking of my fellow man, who naturally paid me back in the same coin. I was awkward and ill at ease in company. I had a genius for saying the wrong thing and making a fool of myself. I never understood people. Even when I watched and planned my own actions with the greatest care, I never could tell how others would react to them. To me men were and are an unpredictable, irrational, and dangerous species of hairless ape. While I could avoid some of my worst gaffes by keeping my own counsel and watching my every word, they did not like that either. They considered me a cold, stiff, unfriendly sort of person when I was only trying to be polite and avoid offending them.

	I never married, and at the time of which I speak I was verging on middle age without a single close friend and no more acquaintances than my professional work required, I could justify my attitude by telling about the vices and follies of mankind, but I will not because you are, I think, familiar enough with these things already.

	My only interest outside my work was a hobby of the history of science. Unlike most of my fellow-philosophers, I was historically-minded, with a good smattering of a Classical education. I belonged to the History of Science Society and wrote papers on the history of science for the periodical Isis.

	I went back to my little rented house, feeling like Galileo. He was a scientist persecuted for his astronomical theories by the religious authorities of my world several centuries before my time, as Georg Schwartzhorn was a few years ago in this world's Europe.

	I felt I had been born too soon. If only the world were scientifically more advanced, my genius would be appreciated and my personal difficulties solved.

	Well, I thought, why is the world not scientifically more advanced? I reviewed the early growth of science. Why had not your fellow-countrymen, when they made a start towards a scientific age two thousand to twenty-five hundred years ago, kept at it until they made science the self-supporting, self-accelerating thing it at last became—in my world, that is?

	I knew the answers that historians of science had worked out. One was the effect of slavery, which made work disgraceful to a free man and therefore made experiment and invention unattractive because they looked like work. Another was the primitive state of the mechanical arts; things like making clear glass and accurate measuring devices. Another was the Hellenes' fondness for spinning cosmic theories without enough facts to go on, the result of which was that most of their theories were wildly wrong.

	Well, thought I, could a man go back to this period and, by applying a stimulus at the right time and place, give the necessary push to set the whole trend rolling off in the right direction?

	People had written fantastic stories about a man's going back in time and overawing the natives by a display of the discoveries of his own later era. More often than not, such a time-traveling hero came to a bad end. The people of the earlier time killed him as a witch, or he met with an accident, or something happened to keep him from changing history. But, knowing these dangers, I could forestall them by careful planning.

	It would do little or no good to take back some major invention, like a printing press or an automobile, and turn it over to the ancients in the hope of grafting it on their culture. I could not teach them to work it in a reasonable time, and if it broke down or ran out of supplies there would be no way to get it running again.

	What I had to do was to find a key mind and implant in it an appreciation of sound scientific method. He would have to be somebody who would have been important in any event, or I could not count on his influence spreading far and wide.

	After study of Sarton and other historians of science, I picked Aristotle. You have heard of him, have you not? He existed in your world just as he did in mine. In fact, up to Aristotle's time our worlds were one and the same.

-

	Aristotle was one of the greatest minds of all time. In my world, he was the first encyclopedist; the first man who tried to know everything, write down everything, and explain everything. He did much good original scientific work, too, mostly in biology.

	However, Aristotle tried to cover so much ground, and accepted so many fables as facts, that he did much harm to science as well as good. For, when a man of such colossal intellect goes wrong, he carries with him whole generations of weaker minds who cite him as an infallible authority. Like his colleagues, Aristotle never appreciated the need for constant verification. Thus, though he was married twice, he said that men have more teeth than women. He never thought to ask either of his wives to open her mouth for a count. He never grasped the need for invention and experiment.

	Now, if I could catch Aristotle at the right period of his career, perhaps I could give him a push in the right direction.

	When would that be? Normally, one would take him as a young man. But Aristotle's entire youth, from seventeen to thirty-seven, was spent in Athens listening to Plato's lectures. I did not wish to compete with Plato, an overpowering personality who would argue rings around anybody. His viewpoint was mystical and antiscientific, the very thing I wanted to steer Aristotle away from. Many of Aristotle's intellectual vices can be traced back to Plato's influence.

	I did not think it wise to present myself in Athens either during Aristotle's early period, when he was a student under Plato, or later, when he headed his own school. I could not pass myself off as a Hellene, and the Hellenes of that time had a contempt for all non-Hellenes, whom they called "barbarians." Aristotle was one of the worst offenders in this respect. Of course this is a universal human failing, but it was particularly virulent among Athenian intellectuals. In his later Athenian period, too, Aristotle's ideas would probably be too set with age to change.

	I concluded that my best chance would be to catch Aristotle while he was tutoring young Alexander the Great at the court of Philip the Second of Macedon. He would have regarded Macedon as a backward country, even though the court spoke Attic Greek. Perhaps he would be bored with bluff Macedonian staghunting squires and lonesome for intellectual company. As he would regard the Macedonians as the next thing to barbaroi, another barbarian would not appear at such a disadvantage there as at Athens.

	Of course, whatever I accomplished with Aristotle, the results would depend on the curvature of spacetime. I had not been wholly frank with my superior. While the equations tended to favor the hypothesis of a positive curvature, the probability was not overwhelming. Perhaps my efforts would have little effect on history, or perhaps the effect would grow and widen like ripples in a pool. In the latter case the existing world would, as my superior said, "be snuffed out."

	Well, at that moment I hated the existing world and would not give a snap of my fingers for its destruction. I was going to create a much better one and come back from ancient times to enjoy it.

	Our previous experiments showed that I could project myself back to ancient Macedon with an accuracy of about two months temporally and a half-parasang spatially. The machine included controls for positioning the time-traveler anywhere on the globe, and safety devices for locating him above the surface of the earth, not in a place already occupied by a solid object. The equations showed that I should stay in Macedon about nine weeks before being snapped back to the present.

	Once I had made up my mind, I worked as fast as I could. I telephoned my superior—you remember what a telephone is?—and made my peace. I said:

	"I know I was a hotheaded fool Fred, but this thing was my baby; my one chance to be a great and famous scientist. I might have got a Nobel prize out of it."

	"Sure, I know, Sherm," he said. "When are you coming back to the lab?"

	"Well ... uh ... what about my group?"

	"I held up the papers on that, in case you might change your mind. So if you come back, all will go on organization-wise as before."

	"You want that final report on A-257, don't you?" I said, trying to keep my voice level.

	"Sure."

	"Then don't let the mechanics start to dismantle the machines until I've written the report."

	"No; I've had the place locked up since yesterday."

	"O.K. I want to shut myself in with the apparatus and the data-sheets for a while and bat out the report without being bothered."

	"That'll be fine," he said.

-

	My first step in getting ready for my journey was to buy a suit of Classical traveler's clothing from a theatrical costume company. This comprised a knee-length pull-over tunic or chiton, a short horseman's cloak or chlamys, knitted buskins, sandals, a broad-brimmed black felt hat, and a staff. I stopped shaving, though I did not have time to raise a respectable beard.

	My auxiliary equipment included a purse of coinage of the time, mostly golden Macedonian staters. Some of these coins were genuine, bought from a numismatic supply house, but most were copies I cast myself in the laboratory at night. I made sure of being rich enough to live decently for longer than my nine-weeks' stay. This was not hard, as the purchasing power of precious metals was more than fifty times greater in the Classical world than in mine.

	I wore the purse attached to a heavy belt next to my skin. From this belt also hung a missile-weapon called a gun, which I have told you about. This was a small gun, called a pistol or revolver. I did not mean to shoot anybody, or expose the gun at all if I could help it. It was there as a last resort.

	I also took several small devices of our science to impress Aristotle: a pocket microscope and a magnifying glass, a small telescope,, a compass, my timepiece, a flashlight, a small camera, and some medicines. I intended to show these things to people of ancient times only with the greatest caution. By the time I had slung all these objects in their pouches and cases from my belt, I had a heavy load. Another belt over the tunic supported a small purse for day-to-day buying and an all-purpose knife.

	I already had a good reading knowledge of Classical Greek, which I tried to polish by practice with the spoken language and listening to it on my talking machine. I knew I should arrive speaking with an accent, but we had no way of knowing exactly what Attic Greek sounded like.

	I decided, therefore, to pass myself off as a traveler from India. Nobody would believe I was a Hellene. If I said I came from the north or west, no Hellene would listen to me, as they regarded Europeans as warlike but half-witted savages. If I said I was from some well-known civilized country like Carthage, Egypt, Babylonia, or Persia, I should be in danger of meeting someone who knew those countries and of being exposed as a fraud. To tell the truth of my origin, save under extraordinary circumstances, would be most imprudent. It would lead to my being considered a lunatic or a liar, as I can guess that your good self has more than once suspected me of being.

	An Indian, however, should be acceptable. At this time, the Hellenes knew about that land only a few wild rumors and the account of Ktesias of Knidos, who made a book of the tales he picked up about India at the Persian court. The Hellenes had heard that India harbored philosophers. Therefore thinking Greeks might be willing to consider Indians as almost as civilized as themselves.

	What should I call myself? I took a common Indian name, Chandra, and Hellenized it to Zandras. That, I knew, was what the Hellenes would do anyway, as they had no "tch" sound and insisted on putting Greek inflectional endings on foreign names. I would not try to use my own name, which is not even remotely Greek or Indian-sounding. (Some day I must explain the blunders in my world that led to Hesperians' being called "Indians.")

	The newness and cleanliness of my costume bothered me. It did not look worn, and I could hardly break it in around Brookhaven without attracting attention. I decided that if the question came up, I should say: yes, I bought it when I entered Greece, so as not to be conspicuous in my native garb.

	During the day, when not scouring New York for equipment, I was locked in the room with the machine. While my colleagues thought I was either writing my report or dismantling the apparatus, I was getting ready for my trip.

	Two weeks went by thus. One day a memorandum came down from my superior, saying: "How is that final report coming?"

	I knew then I had better put my plan into execution at once. I sent back a memorandum: "Almost ready for the writing machine."

	That night I came back to the laboratory. As I had been doing this often, the guards took no notice. I went to the time-machine room, locked the door from the inside, and got out my equipment and costume.

	I adjusted the machine to set me down near Pella, the capital of Macedon, in the spring of the year 340 before Christ in our system of reckoning (976 Algonkian). I set the auto-actuator, climbed inside, and closed the door.

	The feeling of being projected through time really cannot be described. There is a sharp pain, agonizing but too short to let the victim even cry out. At the same time there is the feeling of terrific acceleration, as if one were being shot from a catapult, but in no particular direction.

	Then the seat in the passenger-compartment dropped away from under me. There was a crunch, and a lot of sharp things jabbed me. I had fallen into the top of a tree.

	I grabbed a couple of branches to save myself. The mechanism that positioned me in Macedon, detecting solid matter at the point where I was going to materialize, had raised me up above the treetops and then let go. It was an old oak, just putting out its spring leaves.

	In clutching for branches I dropped my staff, which slithered down through the foliage and thumped the ground below. At least it thumped something. There was a startled yell.

	Classical costume is impractical for tree-climbing. Branches kept knocking off my hat, or snagging my cloak, or poking me in tender places not protected by trousers. I ended my climb with a slide and a fall of several feet, tumbling into the dirt.

	As I looked up, the first thing I saw was a burly, black-bearded man in a dirty tunic, standing with a knife in his hand. Near him stood a pair of oxen yoked to a wooden plow. At this feet stood a water jug.

	The plowman had evidently finished a furrow and lain down to rest himself and his beasts when the fall of my staff on him and then my arrival in person aroused him.

	Around me stretched the broad Emathian Plain, ringed by ranges of stony hills and craggy mountains. As the sky was overcast, and I did not dare consult my compass, I had no sure way of orienting myself, or even telling what time of day it was. I assumed that the biggest mountain in sight was Mount Bermion, which ought to be to the west. To the north I could see a trace of water. This would be Lake Ludias. Beyond the lake rose a range of low hills. A discoloration on the nearest spur of these hills might be a city, though my sight was not keen enough to make out details, and I had to do without my eyeglasses. The gently rolling plain was cut up into fields and pastures with occasional trees and patches of marsh. Dry brown grasses left over from winter nodded in the wind.

	My realization of all this took but a flash. Then my attention was brought back to the plowman, who spoke. I could not understand a word. But then, he would speak Macedonian. Though this can be deemed a Greek dialect, it differed so from Attic Greek as to be unintelligible.

	No doubt the man wanted to know what I was doing in his tree. I put on my best smile and said in my slow fumbling Attic: "Rejoice! I am lost, and climbed your tree to find my way."

	He spoke again. When I did not respond he repeated his words more loudly, waving his knife.

	We exchanged more words and gestures, but it was evident that neither had the faintest notion of what the other was trying to say. The plowman began shouting, as ignorant people will when faced by the linguistic barrier.

	At last I pointed to the distant headland overlooking the lake, on which there appeared a discoloration that might be the city. Slowly and carefully I said:

	"Is that Pella?"

	"Nai, Pella!" The man's mien became less threatening.

	"I am going to Pella. Where can I find the philosopher Aristotles?" I repeated the name.

	He was off again with more gibberish, but I gathered from his expression that he had never heard of any Aristotles. So I picked up my hat and stick, felt through my tunic to make sure my gear was all in place, tossed the rustic a final "Chaire!" and set off.

	By the time I had crossed the muddy field and come out on a cart track, the problem of looking like a seasoned traveler had solved itself. There were green and brown stains on my clothes from the scramble down the tree; the cloak was torn; the branches had scratched my limbs and face; my feet and lower legs were covered with mud. I also became aware that, to one who has lived all his life with his loins decently swathed in trousers and underdrawers, Classical costume is excessively drafty.

	T glanced back to see the plowman still standing with one hand on his plow, looking at me in puzzled fashion. The poor fellow had never been able to decide what, if anything, to do about me.

	When I found a road, it was hardly more than a heavily-used cart track, with a pair of deep ruts and the space between them alternating stones, mud, and long grass.

	I walked towards the lake and passed a few people on the road. To one used to the teeming traffic of my world, Macedon seemed dead and deserted. I spoke to some of the people, but ran into the same barrier of language as with the plowman.

	Finally a two-horse chariot came along, driven by a stout man wearing a headband, a kind of kilt, and high-laced boots. He pulled up at my hail.

	"What is it?" he said, in Attic not much better than mine.

	"I seek the philosopher, Aristotles of Stageira. Where can I find him?"

	"He lives in Mieza."

	"Where is that?" 3

	The man waved. "You are going the wrong way. Follow this road back the way you came. At the ford across the Bottiais, take the right-hand fork, which will bring you to Mieza and Kition. Do you understand?"

	"I think so," I said. "How far is it?"

	"About two hundred stadia."

	My heart sank to my sandals. This meant five parasangs, or a good two-days' walk. I thought of trying to buy a horse or a chariot, but I had never ridden or driven a horse and saw no prospect of learning how soon enough to do any good. I had read about Mieza as Aristotle's home in Macedon, but, as none of my maps had shown it, I had assumed it to be a suburb of Pella.

	I thanked the man, who trotted off, and set out after him. The details of my journey need not detain you. I was benighted far from shelter through not knowing where the villages were, attacked by watchdogs, eaten alive by mosquitoes, and invaded by vermin when I did find a place to sleep the second night. The road skirted the huge marshes that spread over the Emathian Plain west of Lake Ludias. Several small streams came down from Mount Bermion and lost themselves in this marsh.

	At last I neared Mieza, which stands on one of the spurs of Mount Bermion. I was trudging wearily up the long rise to the villages when six youths on little Greek horses clattered down the road. I stepped to one side, but instead of cantering past they pulled up and faced me in a semicircle.

	"Who are you?" asked one, a smallish youth of about fifteen, in fluent Attic. He was blond and would have been noticeably handsome without his pimples.

	"I am Zandras of Pataliputra," I said, giving the ancient name for Patna on the Ganges. "I seek the philosopher Aristotles."

	"Oh, a barbarian!' cried Pimples. "We know what the Aristotles thinks of these, eh, boys?"

	The others joined in, shouting noncompliments and bragging about all the barbarians they would some day kill or enslave.

	I made the mistake of letting them see I was getting angry. I knew it was unwise, but I could not help myself. "If you do not wish to help me, then let me pass," I said.

	"Not only a barbarian, but an insolent one!" cried one of the group, making his horse dance uncomfortably close to me.

	"Stand aside, children!" I demanded.

	"We must teach you a lesson," said Pimples. The others giggled.

	"You had better let me alone," I said, gripping my staff in both hands.

	A tall handsome adolescent reached over and knocked my hat off. "That for you, cowardly Asiatic!" he yelled.

	Without stopping to think, I shouted an English epithet and swung my staff. Either the young man leaned out of the way or his horse shied, for my blow missed him. The momentum carried the staff past my target and the end struck the nose of one of the other horses.

	The pony squealed and reared. Having no stirrups, the rider slid off the animal's rump into the dirt. The horse galloped off.

	All six youths began screaming. The blond one, who had a particularly piercing voice, mouthed some threat. The next thing I knew, his horse bounded directly at me. Before I could dodge, the animal's shoulder knocked me head over heels and the beast leaped over me as I rolled. Luckily, horses' dislike of stepping on anything squashy saved me from being trampled. I scrambled up as another horse bore down upon me. By a frantic leap I got out of its way, but I saw that the other boys were jockeying their mounts to do likewise.

	A few paces away rose a big pine. I dodged in among its lower branches as the other horses ran at me. The youths could not force their mounts in among these branches, so they galloped round and round and yelled. Most of their talk I could not understand, but I caught a sentence from Pimples:

	"Ptolemaios! Ride back to the house and fetch bows or javelins!"

	Hoofbeats receded. I could not see clearly through the pine needles, but I inferred what was happening. The youths would not try to rush me on foot, first because they liked being on horseback, and if they dismounted they might lose their horses or have trouble remounting; second, because as long as I kept my back to the tree they would have a hard time getting at me through the tangle of branches, and I could hit and poke them with my stick as I came. Though not an unusually tall man in my own world, I was much bigger than any of these boys.

	But this was a minor consideration. I recognized the name "Ptolemaios" as that of one of Alexander's companions, who in my world became King Ptolemy of Egypt and founded a famous dynasty. Young Pimples, then, must be Alexander himself. I was in a real predicament. If I stayed where I was, Ptolemaios would bring back missiles for target practice with me as the target. I could, of course, shoot some of the boys with my gun, which would save me for the time being. But in an absolute monarchy, killing the crown prince's friends, let alone the crown prince himself, is no way to achieve a peaceful old age, regardless of the provocation.

	While I was thinking of these matters and listening to my attackers, a stone swished through the branches and bounced off the trunk. The small dark youth who had fallen off his horse had thrown the rock and was urging his friends to do likewise. I caught glimpses of Pimples and the rest dismounting and scurrying around for stones, a commodity with which Greece and Macedon are notoriously well supplied. More stones came through the needles, caroming from the branches. One the size of my fist struck me lightly in the shin.

	The boys came closer so that their aim got better. I wormed my way around the trunk to put it between me and them, but they saw the movement and spread out around the tree. A stone grazed my scalp, dizzying me and drawing blood. I thought of climbing, but as the tree became more thinner with height, I should be more exposed the higher I got, as well as being less able to dodge while perched in the branches than while I was on solid ground.

	That is how things stood when I heard hoofbeats again. This is the moment of decision, I thought. Ptolemaios is coming back with missile weapons. If I used my gun I might doom myself in the long run, but it would be ridiculous to stand there and let them riddle me while I had an unused weapon.

	I fumbled under my tunic and unsnapped the safety strap that kept the pistol in its holster. I pulled the weapon out and checked its projectiles.

	A deep voice broke into the bickering, I caught phrases: "... Insulting an unoffending traveler ... how do you know he is not a prince in his own country? The king shall hear of this ... Like newly-freed slaves, not like princes and gentlemen ..."

	I pushed towards the outer limits of the screen of pine needles. A heavy-set brown-bearded man on a horse was haranguing the youths, who had dropped their stones. Pimples said:

	"We were only having a little sport."

	I stepped out from the branches, walked over to where my battered hat lay, and put it on. Then I said to the newcomer: "Rejoice! I am glad you came before your boys' play got too rough." I grinned, determined to act cheerful if it killed me. Only iron self-control would get me through this difficulty.

	The man grunted, "Who are you?"

	"Zandras of Pataliputra, a city in India. I seek Aristotles the philosopher."

	"He insulted us—" began one of the youths, but Brown-beard ignored him. He said:

	"I am sorry you have had so rude an introduction to our royal house. This mass of youthful insolence"—he indicated Pimples—"is the Alexandras Philippou, heir to the throne of Macedonia." He introduced the others: Hephaistion, who had knocked my hat off and was now holding the others' horses; Nearchos, who had lost his horse; Ptolemaios, who had gone for weapons; and Harpalos and Philotas. He continued:

	"When the Ptolemaios dashed into the house I inquired the reason for his haste, learned of their quarrel with you, and came out forthwith. They have misapplied their master's teachings. They should not behave thus even to a barbarian like yourself, for in so doing they lower themselves to the barbarian's level. I am returning to the house of Aristotles. You may follow."

	The man turned his horse and started walking it back towards Mieza. The six boys busied themselves with catching Nearchos' horse.

	I walked after him, though I had to dogtrot now and then to keep up. As it was uphill, I was soon breathing hard. I panted:

	"Who ... my lord ... are you?"

	The man's beard came round and he raised an eyebrow. "I thought you would know. I am Antipatros, regent of Macedonia."

	Before we reached the village proper, Antipatros turned off through a kind of park, with statues and benches. This, I supposed, was the Precinct of the Nymphs which Aristotle used as a school ground. We went through the park and stopped at a mansion on the other side. Antipatros tossed the reins to a groom and slid off his horse.

	"Aristotles!" roared Antipatros. "A man wishes to see you."

	A man of about my own age—the early forties—came out. He was of medium height and slender build, with a thin-lipped, severe-looking face and a pepper-and-salt beard cut short. He was wrapped in a billowing himation or large cloak, with a colorful scroll-patterned border. He wore golden rings on several fingers.

	Antipatros made a fumbling introduction: "Old fellow, this is ... ah ... what's-his-name from ... ah ... some place in India." He told of rescuing me from Alexander and his fellow-delinquents, adding: "If you do not beat some manners into your pack of cubs soon, it will be too late."

	Aristotle looked at me sharply. "It ith always a pleasure to meet men from afar. What brings you here, my friend?"

	I gave my name and said: "Being accounted something of a philosopher in my own land, I thought my visit to the West would be incomplete without speaking to the greatest Western philosopher. And when I asked who he was, everyone told me to seek out Aristotles Nikomachou."

	Aristotle purred. "It ith good of them to thay tho. Ahem. Come in and join me in a drop of wine. Can you tell me of the wonders of India?"

	"Yes, indeed, but you must tell me in turn of your discoveries, which to me are much more wonderful."

	"Come, come, then. Perhapth you could thtay over a few days. I shall have many, many things to athk you."

	That is how I met Aristotle. He and I hit it off, as we said in my world, from the start. We had much in common. Some people would not like Aristotle's lisp, or his fussy, pedantic ways, or his fondness for worrying any topic of conversation to death. But he and I got along fine. That afternoon, in the house that King Philip had built for Aristotle to use as the royal school, he handed me a cup of resinated wine and asked:

	"Tell me about the elephant, that great beast we have heard of with a tail at both ends. Does it truly exist?"

	"Indeed it does," I said, and went on to tell what I knew of elephants, while Aristotle scribbled notes on a piece of papyrus.

	"What do they call the elephant in India?" he asked.

	The question caught me by surprise, for it had never occurred to me to learn ancient Hindustani along with all the other things I had to know for this expedition. I sipped the wine to give me time to think. I have never cared for alcoholic liquors, and this stuff tasted awful to me, but for the sake of my objective I had to pretend to like it. No doubt I should have to make up some kind of gibberish—but then a mental broad jump carried me back to the stories of Kipling I had read as a boy.

	"We call it a hathi" I said. "Though of course there are many languages in India."

	"How about that Indian wild ath of which Ktesias thpeakth, with a horn in the middle of itth forehead?"

	"You had better call it a nosehorn—rhinokeros—for that is where its horn really is, and it is more like a gigantic pig than an ass ..."

	As dinner-time neared, I made some artful remarks about going out to find accommodations in Mieza, but Aristotle—to my joy—would have none of it. I should stay right there at the school; my polite protestations of unworthiness he waved aside.

	"You muth plan to thtop here for months," he said. "I shall never, never have such a chance to collect data on India again. Do not worry about expense; the king pays all. You are ... ahem ... the first barbarian I have known with a decent intellect, and I get lonethome for good tholid talk. Theophrastos has gone to Athens, and my other friends come to these backlands but theldom."

	"How about the Macedonians?"

	"Aiboi! Thome like my friend Antipatros are good fellows, but most are as lackwitted as a Persian grandee. And now tell me of Patal. .. what is your city's name?"

	Presently Alexander and his friends came in. They seemed taken aback at seeing me closeted with their master. I put on a brisk smile and said: "Rejoice, my friends!" as if nothing untoward had happened. The boys glowered and whispered among themselves, but did not attempt any more disturbance at that time.

	When they gathered for their lecture next morning, Aristotle told them: "I am too busy with the gentleman from India to waste time pounding unwanted wisdom into your miserable little thouls. Go shoot some rabbitth or catch some fish for dinner, but in any cathe begone!"

	The boys grinned. Alexander said: "It seems the barbarian has his uses after all. I hope you stay with us forever, good barbarian!"

	After they had gone, Antipatros came in to say good-by to Aristotle. He asked me with gruff good will how I was doing and went out to ride back to Pella.

	The weeks passed unnoticed and the flowers of spring came out while I visited Aristotle. Day after day we strolled about the Precinct of the Nymphs, talking, or sat indoors when it rained. Sometimes the boys followed us, listening; at other times we talked alone. They played a couple of practical jokes on me, but, by pretending to be amused when I was really furious, I avoided serious trouble with them.

	I learned that Aristotle had a wife and a little daughter in another part of the big house, but he never let me meet the lady. I only caught glimpses of them from a distance.

	I carefully shifted the subject of our daily discourse from the marvels of India to the more basic questions of science. We argued over the nature of matter and the shape of the solar system. I gave out that the Indians were well on the road to the modern concepts—modern in my world, that is—of astronomy, physics, and so forth. I told of the discoveries of those eminent Pataliputran philosophers: Kopernikos in astronomy, Neuton in physics, Darben in evolution, and Mendeles in genetics. (I forgot; these names mean nothing to you, though and educated man of my world would recognize them at once through their Greek disguise.)

	Always I stressed method: the need for experiment and invention and for checking each theory back against the facts. Though an opinionated and argumentative man, Aristotle had a mind like a sponge, eagerly absorbing any new fact, surmise, or opinion, whether he agreed with it or not.

	I tried to find a workable compromise between what I knew science could do on one hand and the limits of Aristotle's credulity on the other. Therefore I said nothing about flying machines, guns, buildings a thousand feet high, and other technical wonders of my world. Nevertheless, I caught Aristotle looking at me sharply out of those small black eyes one day.

	"Do you doubt me, Aristotles?" I said.

	"N-no, no," he said thoughtfully. "But it does theem to me that, were your Indian inventors as wonderful as you make out, they would have fabricated you wings like those of Daidalos in the legend. Then you could have flown to Macedonia directly, without the trials of crothing Persia by camel."

	"That has been tried, but men's muscles do not have enough strength in proportion to their weight."

	"Ahem. Did you bring anything from India to show the thkills of your people?"

	I grinned, for I had been hoping for such a question. "I did fetch a few small devices," said I, reaching into my tunic and bringing out the magnifying glass. I demonstrated its use.

	Aristotle shook his head. "Why did you not show me this before? It would have quieted my doubtth."

	"People have met with misfortune by trying too suddenly to change the ideas of those around them. Like your teacher's teacher, Socrates."

	"That is true, true. What other devices did you bring?"

	I had intended to show my devices at intervals, gradually, but Aristotle was so insistent on seeing them all that I gave in to him before he got angry. The little telescope was not powerful enough to show the moons of Jupiter or the rings of Saturn, but it showed enough to convince Aristotle of its power. If he could not see these astronomical phenomena himself, he was almost willing to take my word that they could be seen with the larger telescopes we had in India.

	One day a light-armed soldier galloped up to us in the midst of our discussions in the Precinct of Nymphs. Ignoring the rest of us, the fellow said to Alexander: "Hail, O Prince! The king, your father, will here before sunset."

	Everybody rushed around cleaning up the place. We were all lined up in front of the big house when King Philip and his entourage arrived on horseback with a jingle and a clatter, in crested helmets and flowing mantles. I knew Philip by his one eye. He was a big powerful man, much scarred, with a thick curly black beard going gray. He dismounted, embraced his son, gave Aristotle a brief greeting, and said to Alexander.

	"How would you like to attend a siege?"

	Alexander whooped.

	"Thrace is subdued," said the king, "but Byzantion and Perinthos have declared against me, thanks to Athenian intrigue. I shall give the Perintheans something to think about besides the bribes of the Great King. It is time you smelled blood, youngster; would you like to come?"

	"Yes, yes! Can my friends come too?"

	"If they like and their fathers let them."

	"O King!" said Aristotle.

	"What is it, spindle-shanks?"

	"I trust thith ith not the end of the prince's education. He has much yet to learn."

	"No, no; I will send him back when the town falls. But he nears the age when he must learn by doing, not merely by listening to your rarefied wisdom. Who is this?" Philip turned his one eye on me.

	"Zandras of India, a barbarian philothopher."

	Philip grinned in a friendly way and clapped me on the shoulder. "Rejoice! Come to Pella and tell my generals about India. Who knows? A Macedonian foot may tread there yet."

	"It would be more to the point to find out about Persia," said one of Philip's officers, a handsome fellow with a reddish-brown beard. "This man must have just come through there. How about it, man? Is the bloody Artaxerxes still solid on his throne?"

	"I know little of such matters," I said, my heart beginning to pound at the threat of exposure. "I skirted the northernmost parts of the Great King's dominions and saw little of the big cities. I know nothing of their politics."

	"Is that so?" said Redbeard, giving me a queer look. "We must talk of this again."

	They all trooped into the big house, where the cook and the serving-wenches were scurrying about. During dinner I found myself between Nearchos, Alexander's little Cretan friend, and a man-at-arms who spoke no Attic. So I did not get much conversation, nor could I follow much of the chatter that went on among the group at the head of the tables. I gathered that they were discussing politics. I asked Nearchos who the generals were.

	"The big one at the king's right is the Parmenion," he said, "and the one with the red beard is the Attalos."

	When the food was taken away and the drinking had begun, Attalos came over to me. The man-at-arms gave him his place. Attalos had drunk a lot of wine already, but if it made him a little unsteady it did not divert him.

	"How did you come through the Great King's domain?" he asked. "What route did you follow?"

	"I told you, to the north," I said.

	"Then you must have gone through Orchoe."

	"I—" I began, then stopped. Attalos might be laying a trap for me. What if I said "yes" and Orchoe was really in the south? Or suppose he had been there and knew all about the place? Many Greeks and Macedonians served the Great King as mercenaries.

	"I passed through many places whose names I never got straight," I said. "I do not remember if Orchoe was among them."

	Attalos gave me a sinister smile through his beard. "Your journey will profit you little, if you cannot remember where you have been. Come, tell me if you heard of unrest among the northern provinces."

	I evaded the question, taking a long pull on my wine to cover my hesitation.

	I did this again and again until Attalos said: "Very well, perhaps you are really as ignorant of Persia as you profess. Then tell me about India."

	"What about it?" I hiccuped; the wine was beginning to affect me, too.

	"As a soldier, I should like to know of the Indian art of war. What is this about training elephants to fight?"

	"Oh, we do much better than that."

	"How so?"

	"We have found that the flesh-and-blood elephant, despite its size, is an untrustworthy war-beast because it often takes fright and stampedes back through its own troops. So the philosophers of Pataliputra make artificial elephants of steel with rapid-fire catapults on their backs."

	I was thinking in a confused way of the armored war-vehicles of my own world. I don't know what made me tell Attalos such ridiculous lies. Partly it was to keep him off the subject of Persia.

	Partly it was a natural antipathy between us. According to history, Attalos was not a bad man, though at times a reckless and foolish one. But it annoyed me that he thought he could pump me by subtle questions, when he was about as subtle as a ton of bricks. His voice and manner said as plainly as words: I am a shrewd, sharp fellow; watch out for me, everybody. He was the kind of man who, if told to spy on the enemy, would don an obviously false beard, wrap himself in a long black cloak, and go slinking about the enemy's places in broad daylight, leering and winking and attracting as much attention as possible. No doubt, too, he had prejudiced me against him by his alarming curiosity about my past.

	But the main cause for my rash behavior was the strong wine I had drunk. In my own world I drank very little and so was not used to these carousals.

	Attalos was all eyes and ears at my tale of mechanical elephants. "You do not say!"

	"Yes, and we do even better than that. If the enemy's ground forces resist the charge of our iron elephants, we send flying chariots, drawn by gryphons, to drop darts on the foe from above." It seemed to me that never had my imagination been so brilliant.

	Attalos gave an audible gasp. "What else?"

	"Well ... ah ... we also have a powerful navy, you know, which controls the lower Ganges and the adjacent ocean. Our ships move by machinery, without oars or sails."

	"Do the other Indians have these marvels, too?"

	"Some, but none is so advanced as the Pataliputrans. When we are outnumbered on the sea, we have a force of tame Tritons who swim under the enemy's ships and bore holes in their bottoms."

	Attalos frowned. "Tell me, barbarian, how it is that, with such mighty instruments of war, the Palalal ... the Patapata ... the people of your city have not conquered the whole world?"

	I gave a shout of drunken laughter and slapped Attalos on the back. "We have, old boy, we have! You Macedonians have just not yet found out that you are our subjects!"

	Attalos digested this, then scowled blackly. "I think you have been making a fool of me! Of me! By Herakles, I ought—"

	He rose and swung a fist back to clout me. I jerked an arm up to guard my face.

	There came a roar of "Attalos!" from the head of the table. King Philip had been watching us.

	Attalos dropped his fist, muttered something like "Flying chariots and tame Tritons, forsooth!" and stumbled back to his own crowd.

	This man, I remembered, did not have a happy future in store. He was destined to marry his neice to Philip, whose first wife Olympias would have the girl and her baby killed after Philip's assassination. Soon afterwards, Attalos would be murdered by Alexander's orders. It was on the tip of my tongue to give him a veiled warning, but I forebore. I had attracted enough hostile attention already.

	Later, when the drinking got heavy, Aristotle came over and shooed his boys off to bed. He said to me: "Let uth walk outthide to clear our heads, Zandras, and then go to bed, too. These Macedones drink like thponges. I cannot keep up with them."

	Outside, he said: "The Attalos thinkth you are a Persian thpy."

	"A spy? Me? In Hera's name, why?" Silently I cursed my folly in making an enemy without any need. Would I never learn to deal with this human species?

	Aristotle said: "He thays nobody could path through a country and remain as ignorant of it as you theem to be. Ergo, you know more of the Persian Empire than you pretend, but wish uth to think you have nothing to do with it. And why should you do that, unleth you are yourthelf a Persian? And being a Persian, why should you hide the fact unleth you are on thome hostile mission?"

	"A Persian might fear anti-Persian prejudice among the Hellenes. Not that I am one," I hastily added.

	"He need not. Many Persians live in Hellas without molestation. Take Artabazos and his sons, who live in Pella, refugees from their own king."

	Then the obvious alibi came to me, long after it should have. "The fact is 1 went even father north than I said. I went around the northern ends of the Caspian and Euxine Seas, and so did not cross the Great King's domains save through the Bactrian deserts."

	"You did? Then why did you not thay tho? If that is true, you have thettled one of our hottest geographical dithputes: whether the Cathpian is a closed thea or a bay of the Northern Ocean."

	"I feared nobody would believe me."

	"I am not sure what to believe, Zandras. You are thtrange man. I do not think you are a Persian, for no Persian was ever a philothopher. It is good for you that you are not."

	"Why?"

	"Because I hate Persia!" he hissed. "You do?"

	"Yeth. I could list the wrongs done by the Great Kings, but it ith enough that they theized my beloved father-in-law by treachery and tortured and crucified him. People like Isokrates talk of uniting the Hellenes to conquer Persia, and Philippos may try it if he lives. I hope he does. However," he went on in a different tone, "I hope he does it without dragging the cities of Hellas into it, for the repositories of civilization have no busineth getting into a brawl between tyrants."

	"In India," said I sententiously, "we are taught that a man's nationality means nothing and his personal qualities everything. Men of all nations come good, bad, and indifferent."

	Aristotle shrugged. "I have known virtuouth Persians, too, but that monstrouth, bloated empire ... No thtate can be truly civilized with more than a few thousand citizens."

	There was no use telling him that large states, however monstrous and bloated he thought them, would be a permanent feature of the landscape from then on. I was trying to reform, not Aristotle's narrow view of international affairs, but his scientific methodology.

	Next morning King Philip and his men and Aristotle's six pupils galloped off towards Pella, followed by a train of baggage mules and the boys' personal slaves. Aristotle said:

	"Let uth hope no chance thlingthtone dashes out Alexandras' brains before he has a chance to show his mettle. The boy has talent, and may go far, though managing him is like trying to plow with a wild bull. Now, let uth take up the question of atoms again, my dear Zandras, about which you have been talking thuch utter rubbish. First, you must admit that if a thing exists, partth of it must also exist. Therefore there is no thuch thing as an indivisible particle ..."

	Three days later, while we were still hammering at the question of atoms, we looked up at the clatter of hoofs. Here cames Attalos and~a whole troop of horsemen. Beside Attalos rode a tall swarthy man with a long gray beard. This man's appearance startled me into thinking he must be another time-traveler from my own time, for he wore a hat, coat, and pants. The mere sight of these familiar garments filled me with homesickness for my own world, however much I hated it when I lived in it.

	Actually, the man's garb was not that of one from my world. The hat was a cylindrical felt cap with ear flaps. The coat was a brown knee-length garment with trousers to match. Over the coat the man wore a yellow vest embroidered with faded red and blue flowers. The whole outfit looked old and threadbare, with patches showing. He was a big craggy-looking fellow, with a great hooked nose, wide cheek bones, and deep-set eyes under bushy beetling brows.

	They all dismounted, and a couple of grooms went around collecting the bridles to keep the horses from running off. The soldiers leaned on their spears, with their bronze bucklers slung on their backs, in a circle around us. These spears were the ordinary six-foot jabbing pikes of the Greek hoplite, not the twelve- or fifteen-foot sarissai of the phalanx.

	Attalos said: "I should like to ask your guest some more philosophical questions, O Aristotles."

	"Athk away."

	Attalos turned, not to me, but to the tall graybeard. He said something I did not catch, and then the man in trousers spoke to me in a language I did not know.

	"I do not understand," I said.

	The graybeard spoke again, in what sounded like a different tongue. He did this several times, using a different-sounding speech each time, but each time I had to confess ignorance.

	"Now you see," said Attalos- "He pretends not to know Persian, Median, Armenian, or Aramaic. He could not have traversed the Great King's dominions from east to west without learning at least one of these."

	"Who are you, my dear sir?" I asked Graybeard.

	The old man gave me a small dignified smile and spoke in Attic with a guttural accent. "I am Artavazda, or Artabazos as the Hellenes say, once governor of Phrygia but now a poor pensioner of King Philippos."

	This, then, was the eminent Persian refugee of whom Aristotle had spoken.

	"I warrant he does not even speak Indian," said Attalos.

	"Certainly," I said, and started off in English: "Now is the time for all good men to come to the aid of the party. Four score and seven years ago our fathers brought forth ..."

	"What would you call that?" Attalos asked Artavazda.

	The Persian spread his hands. "I never heard the like. But then, India is a vast country of many tongues."

	"I was not—" I began, but Attalos kept on:

	"What race would you say he belonged to?"

	"I do not know. The Indians I have seen were much darker, but there might be light-skinned Indians for all I know."

	"If you will listen, general, I will explain," I said. "For most of the journey I was not even in the Persian Empire. I crossed through Bactria and went around the north of the Caspian and Euxine Seas."

	"Oh, so now you tell another story?" said Attalos. "Any educated man knows the Caspian is but a deep bay opening into the Ocean River to the north. Therefore you could not go around it. So in trying to escape, you but mire yourself deeper in your own lies."

	"Look here," said Aristotle. "You have proved nothing of the sort. O Attalos. Ever thince Herodotos there have been those who think the Cathpian a closed thea—"

	"Hold your tongue, professor," said Attalos. "This is a matter of national security. There is something queer about this alleged Indian, and I mean to find out what it is."

	"It is not queer that one who comes from unknown distant lands should tell a singular tale of his journey."

	"No, there is more to it than that. I have learned that he first appeared in a tree top on the farm of the freeholder Diktys Pisandrou. Diktys remembers looking up into the tree for crows before he cast himself down under it to rest. If the Zandras had been in the tree, Diktys would have seen him, as it was not yet fully in leaf. The next instant there was the crash of a body falling into the branches, and Zandras' staff smote Diktys on the head. Normal mortal men do not fall out of the sky into trees."

	"Perhapth he flew from India. They have marvelous mechanisms there, he tells me," said Aristotle.

	"If he survives our interrogation in Pella, perhaps he can make me a pair of wings," said Attalos. "Or better yet, a pair for my horse, so he shall emulate Pegasos. Meanwhile, seize and bind him, men!"

	The soldiers moved. I did not dare submit for fear they would take my gun and leave me defenseless. I snatched up the hem of my tunic to get at my pistol. It took precious seconds to unsnap the safety strap, but I got the gun out before anybody laid a hand on me.

	"Stand back or I will blast you with lightning!" I shouted, raising the gun.

	Men of my own world, knowing how deadly such a weapon can be, would have given ground at the sight of it. But the Macedonians, never having seen one, merely stared at the device and came on. Attalos was one of the nearest.

	I fired at him, then whirled and shot another soldier who was reaching out to seize me. The discharge of the gun produces a lightninglike flash and a sharp sound like a close clap of thunder. The Macedonians cried out, and Attalos fell with a wound in his thigh.

	I turned again, looking for a way out of the circle of soldiers, while confused thoughts of taking one of their horses flashed through my head. A heavy blow in the flank staggered me. One of the soldiers had jabbed me with his spear, but my belt kept the weapon from piercing me. I shot at the man but missed him in my haste.

	"Do not kill him!" screamed Aristotle.

	Some of the soldiers backed up as if to flee; others poised their spears. They hesitated for the wink of an eye, either for fear of me or because Aristotle's command confused them. Ordinarily they would have ignored the philosopher and listened for their general's orders, but Attalos was down on the grass and looking in amazement at the hole in his leg.

	As one soldier dropped his spear and started to run, a blow on the head sent a flash of light through my skull and hurled me to the ground, nearly unconscious. A man behind me had swung his spear like a club and struck me on the pate with the shaft.

	Before I could recover, they were all over me, raining kicks and blows. One wrenched the gun from my hand, 1 must have lost consciousness, for the next thing I remember is lying in the dirt while the soldiers tore off my tunic. Attalos stood over me with a bloody bandage around his leg, leaning on a soldier. He looked pale and frightened but resolute. The second man I had shot lay still.

	"So that is where he keeps his infernal devices!" said Attalos, indicating my belt. "Take it off, men."

	The soldiers struggled with the clasp of the belt until one impatiently sawed through the straps with his dagger. The gold in my money pouch brought cries of delight.

	I struggled to get up, but a pair of soldiers knelt on my arms to keep me down. There was a continuous mumble of talk. Attalos, looking over the belt, said:

	"He is too dangerous to live. Even stripped as he is, who knows but what he will soar into the air and escape by magic?"

	"Do not kill him!" said Aristotle. "He has much valuable knowledge to impart."

	"No knowledge is worth the safety of the kingdom."

	"But the kingdom can benefit from his knowledge. Do you not agree?" Aristotle asked the Persian.

	"Do not drag me into this, pray," said Artavazda. "It is no concern of mine."

	"If he is a danger to Macedonia, he should be destroyed at once," said Attalos.

	"There is but little chance of his doing harm now," said Aristotle, "and an excellent chance of his doing us good."

	"Any chance of his doing harm is too much," said Attalos. "You philosophers can afford to be tolerant of interesting strangers, but if they carry disaster in their baggage it is on us poor soldiers that the brunt will fall. Is it not so, Artabazos?"

	"I have done what you asked and will say no more," said Artavazda. "I am but a simple-minded Persian nobleman who does not understand your Greek subtleties."

	"I can increase the might of your armies, general!" I cried to Attalos.

	"No doubt, and no doubt you can also turn men to stone with an incantation, as the Gorgons did with their glance." He drew his sword and felt the edge with his thumb.

	"You will thlay him for mere thuperstition!" wailed Aristotle, wringing his hands. "At least let the king judge the matter."

	"Not superstition," said Attalos; "murder." He pointed to the dead soldier.

	"I come from another world! Another age!" I yelled, but Attalos was not to be diverted.

	"Let us get this over with," he said. "Set him on his knees, men. Take my sword, Glaukos; I am too unsteady to wield it. Now bow your head, my dear barbarian, and—"

	In the middle of Attalos' sentence, he and the others and all my surroundings vanished. Again there came that sharp pain and sense of being jerked by a monstrous catapult ...

	I found myself lying in leaf-mold with the pearl-gray trunks of poplars all around me. A brisk breeze was making the poplar-leaves flutter and show their silvery bottoms. It was too cool for a man who was naked save for sandals and socks.

	I had snapped back to the year 1981 of the calendar of my world, which I had set out from. But where was I? I should be near the site of Brookhaven National Laboratories in a vastly improved super-scientific world. But there was no sign of super-science here; nothing but poplar trees.

	I got up, groaning, and looked around. I was covered with bruises and bleeding from nose and mouth.

	The only way I had of orienting myself was the boom of a distant surf. Shivering, I hobbled towards the sound. After a few hundred paces I came out of the forest on a beach. This beach could be the shore of Sewanhaki, or Long Island as we called it, but there was no good way of telling. There was no sign of human life; just the beach curving into the distance and disappearing around headlands, with the poplar forest on one side and the ocean on the other.

	What, I wondered, had happened? Had science advanced so far as a result of my intervention that man had already exterminated himself by scientific warfare? Thinkers of my world had concerned themselves with this possibility, but I had never taken it seriously.

	It began to rain. In despair I cast myself down on the sand and beat it with my fists. I may have lost consciousness again.

	At any rate, the next thing I knew was the now-familiar sound of hoofs. When I looked up, the horseman was almost upon me, for the sand had muffled the animal's hoof beats until it was quite close.

	I blinked with incredulity. For an instant I thought I must be back in the Classical era still. The man was a warrior armed and armored in a style much like that of ancient times. At first he seemed to be wearing a helmet of Classical Hellenic type. When he came closer I saw that this was not quite true, for the crest was made of feathers instead of horsehair. The nasal and cheek-plates hid most of his face, but he seemed dark and beardless. He wore a shirt of scalemail, long leather trousers, and low shoes. He had a bow and a small shield hung from his saddle and a slender lance slung across his back by a strap. I saw that this could not be ancient times because the horse was fitted with a large, well-molded saddle and stirrups.

	As I watched the man stupidly, he whisked the lance out of its boot. He spoke in an unknown language.

	I got up, holding my hands over my head in surrender. The man kept repeating his question, louder and louder, and making jabbing motions. All I could say was "I don't understand" in the languages I knew, none of which seemed familiar to him.

	Finally he maneuvered his horse around to the other side of me, barked a command, pointed along the beach the way he had come, and prodded me with the butt of the lance. Off I limped, with rain, blood, and tears running down my hide.

	You know the rest, more or less. Since I could not give an intelligible account of myself, the Sachim of Lenape, Wayotan the Fat, claimed me as a slave. For fourteen years I labored on his estate at such occupations as feeding hogs and chopping kindling. When Wayotan died and the present Sachim was elected, he decided I was too old for that kind of work, especially as I was half crippled from the beatings of Wayotan and his overseers. Learning that I had some knowledge of letters—for I had picked up spoken and written Algonkian in spite of my wretched lot—he freed me and made me official librarian.

	In theory I can travel about as I like, but I have done little of it. I am too old and weak for the rigors of travel in this world, and most other places are, as nearly as I can determine, about as barbarous as this one.

	Besides, a few Lenapes come to hear me lecture on the nature of man and the universe and the virtues of the scientific method. Perhaps I can light a small spark here after I failed in the year 340 B.C.

	When I went to work in the library, my first thought was to find out what had happened to bring the world to its present pass.

	Wayotan's predecessor had collected a considerable library which Wayotan had neglected, so that some of the books had been chewed by rats and others ruined by dampness. Still, there was enough to give me a good sampling of the literature of this world, from ancient to modern times. There were even Herodotos' history and Plato's dialogues, identical with the versions that existed in my own world.

	I had to struggle against more language barriers, as the European languages of this world are different from, though related to, those of my own world. The English of today, for instance, is more like the Dutch of my own world, as a result of England's never having been conquered by the Normans. I also had the difficulty of reading without eyeglasses. Luckily most of these manuscript books are written in a large, clear hand. A couple of years ago I did get a pair of glasses, imported from China, where the invention of the printing press has stimulated their manufacture. But, as they are a recent invention in this world, they are not so effective as those of mine.

	I rushed through all the history books to find out when and how your history diverged from mine. I found that differences appeared quite early. Alexander still marched to the Indus but failed to die at thirty-two on his return. In fact he lived fifteen years longer and fell at last in battle with the Sarmatians in the Caucasus Mountains. I do not know why that brief contact with me enabled him to avoid the malaria-mosquito that slew him in my world. Maybe I aroused in him a keener interest in India than he would otherwise have had, leading him to stay there longer so that all his subsequent schedules were changed. His empire held together for most of a century instead of breaking up right after his death as it did in my world.

	The Romans still conquered the whole Mediterranean, but the course of their conquests and the names of the prominent Romans were all different. Two of the chief religions of my world, Christianity and Islam, never appeared at all. Instead we have Mithraism, Odinism, and Soterism, the last an Egypto-Hellenic synthesis founded by that fiery Egyptian prophet whose followers call him by the Greek word for "savior."

	Still, Classical history followed the same general course that it had in my world, even though the actors bore other names. The Roman Empire broke up, as it did in my world, though the details are all different, with a Hunnish emperor ruling in Rome and a Gothic one in Antioch.

	It is after the fall of the Roman Empire that profound differences appear. In my world there was a revival of learning that began about nine hundred years ago, followed by a scientific revolution beginning four centuries later. In your history the revival of learning was centuries later, and the scientific revolution has hardly begun. Failure to develop the compass and the full-rigged ship resulted in North America's—I mean Hesperia's—being discovered and settled via the .northern route, by way of Iceland, and more slowly than in my world. Failure to invent the gun meant that the natives of Hesperia were not swept aside by the invading Europeans, but held their own against them and gradually learned their arts of iron-working, weaving, cereal-growing, and the like. Now most of the European settlements have been assimilated, though the ruling families of the Abnakis and Mohegans frequently have blue eyes and still call themselves by names like "Sven" and "Eric."

	I was eager to get hold of a work by Aristotle, to see what effect I had had on him and to try to relate this effect to the subsequent course of history. From allusions in some of the works in this library I gathered that many of his writings had come down to modern times, though the titles all seemed different from those of his surviving works in my world. The only actual samples of his writings in the library were three essays, "Of Justice,"

	"On Education," and "Of Passions and Anger." None of these showed my influence.

	I had struggled through most of the Sachim's collection when I found the key I was looking for. This was an Iberic translation of "Lives of the Great Philosophers," by one Diomedes of Mazaka. I never heard of Diomedes in the literary history of my own world, and perhaps he never existed. Anyway, he had a long chapter on Aristotle, in which appears the following section:

	Now Aristotle, during his sojourn at Mitylene, had been an assiduous student of natural sciences. He had planned, according to Timotheus, a series of works which should correct the errors of Empedokles, Dem-okritos, and others of his predecessors. But after he had removed to Macedonia and busied himself with the education of Alexander, there one day appeared before him a traveler, Sandos of Palibothra, a mighty philosopher of India. The Indian ridiculed Aristotle's attempts at scientific research, saying that in his land these investigations had gone far beyond anything the Hellenes had attempted, and the Indians were still a long way from arriving at satisfactory explanations of the universe. Moreover he asserted that no real progress could be made in natural philosophy unless the Hellenes abandoned their disdain for physical labor and undertook exhaustive experiments with mechanical devices of the sort which cunning Egyptian and Asiatic craftsmen make.

	King Philip, hearing of the presence of this stranger in his land and fearing lest he be a spy sent by some foreign power to harm or corrupt the young prince, came with soldiers to arrest him. But when he demanded that Sandos accompany him back to Pella, the latter struck dead with thunderbolts all the king's soldiers that were with him. Then, it is said, mounting into his chariot drawn by winged gryphons, he flew off in the direction of India. But other authorities say that the man who came to arrest Sandos was Antipatros, the regent, and that Sandos cast darkness before the eyes of Antipatros and Aristotle, and when they recovered he had vanished.

	Aristotle, reproached by the king for harboring so dangerous a visitor and shocked by the sanguinary ending of the Indian's visit, resolved to have no more to do with the sciences. For, as he explains in his celebrated treatise "On the Folly of Natural Science," there are three reasons why no good Hellene should trouble his mind with such matters. One is that the number of facts which must be mastered before sound theories are possible is so vast that if all the Hellenes did nothing else for centuries, they would still not gather the amount of data required. The task is therefore futile. Secondly, experiments and mechanical inventions are necessary to progress in science, and such work, though all very well for slavish Asiatics, who have a natural bent for it, is beneath the dignity of a Hellenic gentleman. And lastly, some of the barbarians have already surpassed the Hellenes in this activity, wherefore it ill becomes the Hellenes to compete with their inferiors in skills at which the latter have an inborn advantage. They should rather cultivate personal rectitude, patriotic valor, political rationality, and aesthetic sensitivity, leaving to the barbarians such artificial aids to the good and virtuous life as are provided by scientific discoveries.

	This was it, all right. The author had gotten some of his facts wrong, but that was to be expected from an ancient historian.

	So! My teachings had been too successful. I had so well shattered the naive self-confidence of the Hellenic philosophers as to discourage them from going on with science at all. I should have remembered that glittering theories and sweeping generalizations, even when wrong, are the frosting on the cake; they are the carrot that makes the donkey go. The possibility of pronouncing such universals is the stimulus that keeps many scientists grinding away, year after year, at the accumulation of facts, even seemingly dull and trivial facts. If ancient scientists had realized how much laborious fact-finding lay ahead of them before sound theories would become possible, they would have been so appalled as to drop science altogether. And that is just what happened.

	The sharpest irony of all was that I had placed myself where I could not undo my handiwork. If I had ended up in a scientifically advanced world, and did not like what I found, I might have built another time machine, gone back, and somehow warned myself of the mistake lying in wait for me. But such a project is out of the question in a backward world like this one, where seamless columbium tubing, for instance, is not even thought of. All 1 proved by my disastrous adventure is that space-time has a negative curvature, and who in this world cares about that?

	You recall, when you were last here, asking me the meaning of a motto in my native language on the wall of my cell. I said I would tell you in connection with my whole fantastic story. The motto says: "Leave Well Enough Alone," and I wish I had.

Cordially yours,
Sherman Weaver.

The End