their homeworlds. We established a series of observation posts to check further expansion—and six months later we were at war. The outer worlds formed what they called a defensive league and with characteristic human rationality promptly attacked us. Naturally, they didn't get far. We had a bigger and better fleet and we were organized while they were not. And so they were utterly defeated at the Battle of Ophiuchus. It was then that we had two choices. We could either move in and take over their defenseless worlds, or we could let them rebuild and get strong, and with their strength acquire a knowledge of cooperation—and take the chance that they would ultimately beat us. Knowing this, we wisely chose the second course and set about teaching our fellow men a lesson that was now fifteen years along and not ended yet. By applying pressure at the right places we turned their attention inward to us rather than to the outside, and by making carefully timed sorties here and there about the periphery we forced them through sheer military necessity to gradually tighten their loosely organized League into tightly centralized authority, with the power to demand and obtain—to meet our force with counterforce. By desperate measures and straining of all their youthful resources they managed to hold us off. And with every strain they were welded more tightly together. And slowly they were learning through war what we could not teach through peace. Curiously enough, they wouldn't believe our aims even when captured crews told them. They thought it was some sort of tricky mental conditioning designed to frustrate their lie detectors. Even while they tightened their organization and built new fleets, they would not believe that we were forcing them into the paths they must travel to avoid future annihilation. It was one of the ironies of this war that it was fought and would be fought with the best of intentions. For it was obvious now that we could never win—nor could they. The Rebels, as we called them, were every whit as strong as we, and while we enjoyed the advantages of superior position and technology they had the advantage of superior numbers. It was stalemate,—the longest, fiercest stalemate in man's bloody history. But it was stalemate with a purpose. It was a crazy war—a period of constant hostilities mingled with sporadic offensive actions like the one we were now engaged in—but to us, at least, it was war with a purpose—the best and noblest of human purposes—the preservation of the race.