Overview
The Postman is a post-apocalyptic dystopia science fiction novel by David Brin. It is about a man wandering the desolate Oregon countryside who finds a United States Postal Service uniform, which he puts on and then claims he is a mail carrier and federal inspector for the "Restored United States of America". His mail service and claims about the return of a central government gives hope to the people, who are threatened by a murderous, neo-feudalist militia.
The first two parts were published separately as "The Postman" (1982) and "Cyclops" (1984). In 1997, a film adaptation of the novel was released starring Kevin Costner and Will Patton.
Plot
Despite the post-apocalyptic scenario and several action sequences, the book is largely about civilization and its symbols. Each of the three sections deals with a different symbol.
The first is the Postman himself, Gordon Krantz, who takes the uniform solely for warmth after he loses almost everything to bandits. He wanders amongst small communities performing scenes from William Shakespeare plays in return for food and shelter. Originally a drama student at the University of Minnesota, he traveled west to Oregon in the aftermath of the worldwide chaos that resulted from several EMPs, the destruction of major cities, and the release of bioweapons. Taking shelter in a long-abandoned postal van, he finds a sack of mail and a postal uniform. He wears the uniform and takes the mail to a nearby community to barter for food and shelter. His initial claims to be a real postman start not because of a deliberate fraud (at least initially) but because people are desperate to believe in him and his claim that he represents the "Restored United States".
From Wikipedia (CC BY-SA 4.0).