Microworlds: Writings on Science Fiction and Fantasy is a 1984 book by Polish author Stanisław Lem, a collection of his essays on the genres of science fiction and fantasy in general, as well as about specific authors and their works. It is edited by Franz Rottensteiner and published in the United States by Harcourt Brace & Company. The book is a selection of previously published translations of Lem's essays.Rottensteiner writes that it is "a useful introduction to Lem's nonfiction and his ideas on science fiction and fantasy" and that it should help readers to understand Lem's fiction better. Source: Wikipedia (en)