In this volume Umberto Eco unlocks the riddles of history in an exploration of the "linguistics of the lunatic", stories told by scholars, scientists, poets, fanatics, and ordinary people in order to make sense of the world. In a careful unravelling of the fabulous and the false, Eco shows us how serendipities - unanticipated truths - often spring from mistaken ideas. From Leibniz's belief that the "I Ching" illustrated the principles of calculus to Marco Polo's mistaking a rhinoceros for a unicorn, Eco tours the labyrinth of intellectual history, illuminating the ways in which we project the familiar onto the strange. Exploring the "Force of the False" Eco uncovers layers of mistakes, such as Columbus's assumption that the world was much smaller than it is, leading him to seek out a quick route to the East via the West and thus fortuitously "discovering" America.