The penultimate truth
The Penultimate Truth is a 1964 science fiction novel by American writer Philip K. Dick. The story is set in a future where the bulk of humanity is kept in large underground shelters. The people are told that World War III is being fought above them, when in reality the war ended years ago. The novel is based on Dick's 1953 short story "The Defenders". Dick also drew upon two other of his short stories for the plot of the novel: "The Mold of Yancy" and "The Unreconstructed M".
Underground areas, Fiction in English, Nuclear warfare, Regression (Civilization), Fiction
Philip K. Dick
Philip Kindred Dick was an American novelist, short story writer, and essayist whose published work during his lifetime was almost entirely in the science fiction genre. Dick explored sociological, political and metaphysical themes in novels dominated by monopolistic corporations, authoritarian governments, and altered states. In his later works, Dick's thematic focus strongly reflected his personal interest in metaphysics and theology. He often drew upon his own life experiences and addressed the nature of drug abuse, paranoia and schizophrenia, and transcendental experiences in novels such as A Scanner Darkly and VALIS.

Source and more information: [Wikipedia (EN)](http://en.wikipedia.org/wiki/Philip_K._Dick)