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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 offin 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 from their swoon 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 become 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 arc 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 philsophers 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 scientically 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 I 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.