“Slowly I came to realize that all you have said is true. I learned that you were not keeping knowledge from me deliberately when you taught us so quickly and carefully about the laws and techniques used by the glider-makers on that island. I learned it still more surely when you helped Dondragmer make the differential pulley. I was expecting you to bring up those points in your speech just now; why didn’t you? They were good ones.

“It was actually when you were teaching us about the gliders that I began to have a slight understanding of what was meant by your term ‘science.’ I realized, before the end of that episode, that a device so simple you people had long since ceased to use it actually called for an understanding of more of the universe’s laws than any of my people realized existed. You said specifically at one point, while apologizing for a lack of exact information, that gliders of that sort had been used by your people more than two hundred years ago. I can guess how much more you know now — guess just enough to let me realize what I can’t know.

“But you can still do what I want. You have done a little already, in showing us the differential hoist. I do not understand it, and neither does Dondragmer, who spent much more time with it; but we are both sure it is some sort of relative to the levers we have been using all our lives. We want to start at the beginning, knowing fully that we cannot learn all you know in our lifetimes. We do hope to learn enough to understand how you have found these things out. Even I can see it is not just guesswork, or even philosophizing like the learned ones who tell us that Mesklin is a bowl. I am willing at this point to admit you are right; but I would like to know how you found out the same fact for your own world. I am sure you knew before you left its surface and could see it all at once. I want to know why the Bree floats, and why the canoe did the same, for a while. I want to know what crushed the canoe. I want to know why the wind blows down the cleft all the time — no, I didn’t understand your explanation. I want to know why we are warmest in winter when we can’t see the sun for the longest time. I want to know why a fire glows, and why flame dust kills. I want my children or theirs, if I ever have any, to know what makes this radio work, and your tank, and someday this rocket. I want to know much — more than I can learn, no doubt; but if I can start my people learning for themselves, the way you must have — well, I’d be willing to stop selling at a profit.” Neither Lackland nor Rosten found anything to say for a long moment. Rosten broke the silence.

“Barlennan, if you learned what you want, and began to teach your people, would you tell them where the knowledge came from? Do you think it would be good for them to know?”

“For some, yes; they would want to know about other worlds, and people who had used the same way to knowledge they were starting on. Others — well, we have a lot of people who let the rest pull the load for them. If they knew, they wouldn’t bother to do any learning themselves; they’d just ask for anything particular they wanted to know — as I did at first; and they’d never realize you weren’t telling them because you couldn’t. They’d think you were trying to cheat them. I suppose if I told anyone, that sort would find out sooner or later, and — well, I guess it would be better to let them think I’m the genius. Or Don; they’d be more likely to believe it of him.”

Rosten’s answer was brief and to the point

“You’ve made a deal.”

XX: FLIGHT OF THE “BREE”

A gleaming skeleton of metal rose eight feet above a flat-topped mound of rock and earth. Mesklinites were busily attacking another row of plates whose upper fastenings had just been laid bare. Others were pushing the freshly removed dirt and pebbles to the edge of the mound. Still others moved back and forth along a well-marked road that led off into the desert, those who approached dragging flat, wheeled carts loaded with supplies, those departing usually hauling similar carts empty. The scene was one of activity; practically everyone seemed to have a definite purpose. There were two radio sets in evidence now, one on the mound where an Earthman was directing the dismantling from his distant vantage point and the other some distance away.

Dondragmer was in front of the second set, engaged in animated conversation with the distant being he could not see. The sun still circled-endlessly, but was very gradually descending now and swelling very, very slowly.