"Nyjord is medvirk," Ulv said, raising his blowgun and sending a dart across the cavern. It struck one of the technicians who gasped and fell to the floor.
Brion's shots crashed into the control board, shorting and destroying it, removing the menace to Nyjord for all time.
Medvirk, Ulv had said. A life form that co-operates and aids other life forms. It may kill in self-defense, but is essentially not a killer or destroyer. Ulv had a lifetime of knowledge about the interdependency of life. He grasped the essence of the idea and ignored all the verbal complications and confusions. He had killed the magter, who were his own people, because they were umedvirk—against life. And saved his enemies because they were medvirk.
With this realization came the painful knowledge that the planet and the people that had produced this understanding were dead.
In the cavern the magter saw the destruction of their plans, and the cave mouth from which the bullets had come. Silently they rushed to kill their enemy. A concerted wave of emotionless fury.
Brion and Ulv fought back. Even the knowledge that he was doomed no matter what happened could not resign Brion to death at the hands of the magter. To Ulv, the decision was much easier. He was simply killing umedvirk. A believer in life, he destroyed the anti-life.
They retreated into the darkness, still firing. The magter had lights and ion-rifles, and were right behind them. Knowing the caverns better than the men they chased, pursuers circled. Brion saw lights ahead and dragged Ulv to a stop.
"They know their way through these caves, and we don't," he said. "If we try to run, they'll just shoot us down. Let's find a spot we can defend and settle into it."
"Back here," Ulv gave a tug in the right direction, "there is a cave with only one very narrow entrance."