A Perfect Vacuum (Polish: Doskonała próżnia) is a 1971 book by Polish author Stanisław Lem, the largest and best known collection of Stanisław Lem's fictitious criticism of nonexisting books. It was translated into English by Michael Kandel. Some of the reviews remind the reader of drafts of his science fiction novels, some read like philosophical pieces across scientific topics, from cosmology to the pervasiveness of computers, finally others satirize and parody everything from the nouveau roman to pornography, Ulysses, authorless writing, and Dostoevsky. Source: Wikipedia (en)