nA fascinating book on the joys of discovering how the world works, by the Pulitzer Prize-winning author of Cosmos and Shadows of Forgotten Ancestors. nMagnificent . . . Delightful . . . A masterpiece. A message of tremendous hope for humanity . . . While ever conscious that human folly can terminate mans march into the future, Sagan nonetheless paints for us a mind-boggling future: intelligent robots, the discovery of extraterrestrial life and its consequences, and above all the challenge and pursuit of the mystery of the universe.--Chicago Tribune n nGo out and buy this book, because Carl Sagan is not only one of the worlds most respected scientists, hes a great writer. . . . I can give a book no greater accolade than to say Im planning on reading it again. And again. And again.--The Miami Herald n nThe brilliant astronomer . . . is persuasive, provocative and readable.--United Press International n nClosely reasoned, impeccably researched, gently humorous, utterly devastating.--The Washington Postn