"So we changed our plans, Littlejohn. Perhaps the shock had been too much. Instead of plotting to rebuild the world, we turned our thoughts to completing its destruction. Our tools and texts were gone, buried in the rubble with the bodies of fine young men. But we had our minds. Crazed minds, you'd call them—but aware of reality. The grim reality of the post-revolutionary years.
"We burrowed away in the desert. We schemed and we dreamed. From time to time we sent out spies. We knew what was going on. We knew the Naturalists were gone, that six-footers had vanished from a Yardstick world. We knew about the rehabilitation projects. We watched your people gradually evolve new patterns of living and learning. Some of the former knowledge was rescued, but not all. Our little group had far more learning than you've ever dreamed of. Fifty of us, between ourselves, could have surpassed all your scientists in every field.
"But we watched, and we waited. And some of us died of privation and some of us died of old age. Until, at last, there were only a dozen of us to share the dream. The dream of destruction. And we knew that we must act swiftly, or not at all.
"So we came into the world, cautiously and carefully, moving unobtrusively and unobserved. We wanted to contemplate the corruption, seek out the weaknesses in your degenerate civilization. And we found them, immediately. Those weaknesses are everywhere apparent, for they are physical. You're one of a dying race, Littlejohn. Mankind's days are numbered. There's no need for grandiose schemes of reactivating warheads in buried missile-centers, of loosing thermo-nucs upon the world. Merely by killing off the central council here in New Chicagee, we can accomplish our objective. A dozen men die, and there's not enough initiative left to replace them. It's as simple as that. And as complicated."
Harry Collins nodded. "Yes, as complicated. Because the only weaknesses we've observed are physical ones. We've seen enough of the ways of this new civilization to realize that.
"All of the things I hated during my lifetime have disappeared now—the crowding, the competition, the sordid self-interest, the bigotry, intolerance, prejudice. The anti-social aspects of society are gone. There is only the human race, living much closer to the concept of Utopia than I ever dreamed possible. You and the other survivors have done well, Littlejohn."
"And yet you come to kill us."
"We came for that purpose. Because we still retained the flaws and failings of our former cultures. We looked for targets to blame, for villains to hate and destroy. Instead, we found this reality.
"No, I'm not crazy, Littlejohn. And I and my fellows aren't here to execute revenge. We have returned to the original plan; the plan Leffingwell had, and my son, and all the others who worked in their own way for their dream of a better world. We come now to help you. Help you before you die—before we die."
Littlejohn looked up and sighed. "Why couldn't this have happened before?" he murmured. "It's too late now."