The senior ranking Interplan officer present said briskly, “He better not be too much upset to hear about it, not if he expects not to get shot.”

“Unlike the fantasy of wanting to be an Interplan undercover agent.” the psychiatrist continued, “which, being relatively speaking a product of maturity, had a certain plausibility to it, this production is a grotesque dream of your childhood; it is no wonder you fail to recall it. Your fantasy is this: you are nine years old, walking alone down a rustic lane. An unfamiliar variety of space vessel from another star system lands directly in front of you. No one on Earth but you, Mr. Quail, sees it. The creatures within are very small and helpless, somewhat on the order of field mice, although they are attempting to invade Earth; tens of thousands of other such ships will soon be on their way, when this advance party gives the go-ahead signal.”

“And I suppose I stop them,” Quail said, experiencing a mixture of amusement and disgust. “Single-handed I wipe them out. Probably by stepping on them with my foot.”

“No,” the psychiatrist said patiently. “You halt the invasion, but not by destroying them. Instead, you show them kindness and mercy, even though by telepathy—their mode of communication—you know why they have come. They have never seen such humane traits exhibited by any sentient organism, and to show their appreciation they make a covenant with you.”

Quail said, “They won’t invade Earth as long as I’m alive.”

“Exactly.” To the Interplan officer the psychiatrist said, “You can see it does fit his personality, despite his feigned scorn.”

“So by merely existing,” Quail said, feeling a growing pleasure, “by simply being alive, I keep Earth safe from alien rule. I’m in effect, then, the most important person on Terra. Without lifting a finger.”