A lonely astronaut—practically a man of our time with all our virtues and shortcomings—returns to the Earth of the future after a relativistic star expedition and discovers that all Earth’s inhabitants have become telepaths. Unable to bear it—that he can no longer hide anything from anyone, even the thoughts that he dislikes in himself, the things he is ashamed of—the astronaut withdraws from people and becomes a gamekeeper in a secluded reserve. But the telepathic society is indeed humane (“If we can’t prove to one good person that lying is not necessary for life—then all of us are worth a penny,” says one of the story’s heroes). It helps the visitor from the past adapt quietly and unobtrusively, and by the end of the story there is hope that the adaptation will succeed.