The international bestseller about life the universe & everything When 14-year-old Sophie encounters a mysterious mentor who introduces her to philosophy mysteries deepen in her own life Why does she keep getting postcards addressed to another girl? Who is the other girl? & who for that matter is Sophie herself? To solve the riddle she uses her new knowledge of philosophy but the truth is far stranger than she could have imagined An addictive blend of mystery philosophy & fantasy Sophie's World is an international phenomenon which has been translated into 60 languages & sold more than 40 million copies