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. A phenomenal worldwide bestseller SOPHIE'S WORLD sets out to draw teenagers into the world of Socrates Descartes Spinoza Hegel & all the great philosophers. A brilliantly original & fascinating story with many twists & turns it raises profound questions about the meaning of life & the origin of the universe.