I saw them there. Perhaps not more than a dozen in that room. But in other rooms? Perhaps in a lacework of underground rooms? A whole civilization which, like ourselves on Mars, had gone underground, sealed themselves in against the thinning atmosphere, the dying planet? And we had begun the atomic destruction of their planet. We had begun it. We could not stop it. The corrosion keeps growing, spreading. I saw them die. Somehow I felt their pain. But I did not die of it. I carry it with me. I shall always carry it with me. * * * * * That's all there is. In years to come people on Earth, people who did not see what we saw, did not feel the pain and guilt we felt, will wonder at our behavior following that. Oh there is much to wonder. If there is a civilization, where does their food come from? If they are able to convert rock to food, why are they not able to stop the atomic destruction of their planet we have started? If they are able to so fill us with their own grief for what we have done that we can think of nothing but to slink away, like whipped curs caught in vandalism; why didn't they do this before we started the fire we cannot stop? Oh, there is so much unanswered. People will wonder that we simply abandoned most of our equipment, the very project itself; that for a sick hour we watched, then, with one accord, without anybody making the decision, we began to withdraw and start for home. Like small boys, thinking only to vandalize a schoolhouse in their savage glee, discovering it is a shrine. Or, perhaps in time, we can rationalize it all away. Perhaps so soon as during that long journey back. It wasn't our fault, we shall begin to say. They were as much to blame as we. Sure they were! More to blame! They were more to blame than we! Why didn't they come out of their holes and fight us? With their fists if they didn't have any guns? _Any_ red-bloodied--er, red-blooded--Amuri--well, whatever they are--ought to have enough guts to come out and fight, to defend home, flag and mother! We'll probably get around to that. It's the normal attitude to take after vandalism. It's the human way. But as of now, our only thought is to slink away. * * * * * On our abandoned Martian landing field there hangs a man's discarded spacesuit, suspended from the desensitized prongs of a Come-to-me tower. It is stuffed with straw filched, no doubt, from packing cases which brought out so many more delicate, sensitive, precision instruments than we take back. Although we have not been entirely irresponsible in our head-long flight back home. We do bring back some of what we took out; the more valuable of the instruments. We have been most selective in this. The only coarse, insensitive, unfinished instrument we bring back--is man. THE END