Sofies Welt. Roman über die Geschichte der Philosophie

Sophie's World (Norwegian: Sofies verden) is a 1991 novel by Norwegian writer Jostein Gaarder. It follows Sophie Amundsen, a Norwegian teenager, who is introduced to the history of philosophy as she is asked "Who are you?" in a letter from an unknown philosopher. The nonfictional content of the book aligns with Bertrand Russell's The History of Western Philosophy.Sophie's World became a best-seller in Norway and won the Deutscher Jugendliteraturpreis in 1994. The English translation was published in 1995, and the book was reported to be the best-selling book in the world that year. By 2011, the novel had been translated into fifty-nine languages, with over forty million print copies sold. It is one of the most commercially successful Norwegian novels outside of Norway, and has been adapted into a film and a PC game.