"There are very few births. Our life is a constant struggle against the obliteration of our race. Every man's life must be preserved until there is a child to replace him. And this can be done only by our constant and never-ending search for the sersee berries. And there are never enough," the medicine man sighed. "Never enough." "Does the juice cure everything?" Fred asked. "It does more than that. Those who have tasted sersee add fifty of our years to their lives." Carver opened his eyes wide. Fifty years on Loray was roughly the equivalent of sixty-three on Earth. The sersee was more than a healing agent, more than a regenerator. It was a longevity drug as well. He paused to consider the prospect of adding another sixty years to his lifetime. Then he asked, "What happens if a man takes sersee again after the fifty years?" "We do not know," Deg told him. "No man would take it a second time while there is not enough." Carver and Fred exchanged glances. "Now listen to me carefully, Deg," Professor Carver said. He spoke of the sacred duties of science. Science, he told the medicine man, was above race, above creed, above religion. The advancement of science was above life itself. What did it matter, after all, if a few more Lorayans died? They would die eventually anyhow. The important thing was for Terran science to have a sample of sersee. "It may be as you say," Deg said. "But my choice is clear. As a priest of the Sunniheriat religion, I have a sacred trust to preserve the lives of my people. I cannot go against this trust." He turned and walked off. The Earthmen frustratedly returned to their spaceship. After coffee, Professor Carver opened a drawer and took out the manuscript of Underlying Causes for the Implicit Inferiority of Non-Terran Races. Lovingly he read over the last chapter, the chapter that dealt with the specialized inferiorities of the Lorayan people. Then he put the manuscript away. "Almost finished, Fred," he told his assistant. "Another week's work, two weeks at the most!" "Um," Fred replied, staring at the village through a porthole.