"Come right in, gentlemen," the Ambassador said, so cheerfully that Cercy felt sick. "I'm sorry I can't offer you anything. Through an oversight, I haven't been given any food or water for about ten days. Not that it matters, of course." "Glad to hear it," Cercy said. The Ambassador hardly looked as if he had been facing all the violence Earth had to offer. On the contrary, Cercy and his men looked as though they had been under bombardment. "You've got quite a defense there," Malley said conversationally. "Glad you like it." "Would you mind telling us how it works?" Darrig asked innocently. "Don't you know?" "We think so. You become what is attacking you. Is that right?" "Certainly," the Ambassador said. "You see, I have no secrets from you." "Is there anything we can give you," Cercy asked, "to get you to turn off that signal?" "A bribe?" "Sure," Cercy said. "Anything you--?" "Nothing," the Ambassador replied. "Look, be reasonable," Harrison said. "You don't want to cause a war, do you? Earth is united now. We're arming--" "With what?" "Atom bombs," Malley answered him. "Hydrogen bombs. We're--" "Drop one on me," the Ambassador said. "It wouldn't kill me. What makes you think it will have any effect on my people?" * * * * * The four men were silent. Somehow, they hadn't thought of that. "A people's ability to make war," the Ambassador stated, "is a measure of the status of their civilization. Stage one is the use of simple physical extensions. Stage two is control at the molecular level. You are on the threshold of stage three, although still far from mastery of atomic and subatomic forces." He smiled ingratiatingly. "My people are reaching the limits of stage five." "What would that be?" Darrig asked. "You'll find out," the Ambassador said. "But perhaps you've wondered if my powers are typical? I don't mind telling you that they're not. In order for me to do my job and nothing more, I have certain built-in restrictions, making me capable only of passive action." "Why?" Darrig asked. "For obvious reasons. If I were to take positive action in a moment of anger, I might destroy your entire planet." "Do you expect us to believe that?" Cercy asked. "Why not? Is it so hard to understand? Can't you believe that there are forces you know nothing about? And there is another reason for my passiveness. Certainly by this time you've deduced it?" "To break our spirit, I suppose," Cercy said.