the individual, friend Radek. Only about the species. And the species with a rapid turnover of individuals can evolve faster, become more effective—" "Then why does man, the fastest-evolving metazoan of all, have one of the longest lifespans? He does, you know ... among mammals, at any rate. Seems to me our bodies must be all-around better than average, better able to fight off the death virus. Fish live a longer time, sure—and maybe in the water they aren't so exposed to the disease. May flies are short-lived; have they simply adapted their life cycle to the existence of the virus?" Lang frowned. "You appear to have studied this subject enough to have some mistaken ideas about it. I can't argue with a man who insists on protecting his cherished irrationalities with fancy verbalisms." "And you appear to think fast on your feet, Dr. Lang." Radek laughed. "Maybe not fast enough. But I'm not being paranoid about this. You can convince me." "How?" "Show me. Take me into those underground rooms and show me what you actually have." "I'm afraid that's impos—" "All right." Radek stood up. "I hate to do this, but a man must either earn a living or go on the public freeloading roll ... which I don't want to do. The facts and conjectures I already have will make an interesting story." Lang rose too, his eyes widening. "You can't prove anything!" "Of course I can't. You're sitting on all the proof." "But the public reaction! God in Heaven, man, those people can't think!" "No ... they can't, can they?" He moved toward the door. "Goodnight." Radek's muscles were taut. In spite of everything that had been said, a person hounded to desperation could still do murder. There was a great quietness as he neared the door. Then Lang spoke. The voice was defeated, and when Radek looked back it was an old man who stood behind the desk. "You win. Come along with me." They went down an empty hall, after dismissing the guards, and took an elevator below ground. Neither of them said anything. Somehow, the sag of Lang's shoulders was a gnawing in Radek's conscience.