A book lover today might sometimes feel like the fictional medieval friar William of Baskerville in Eco's The Name of the Rose, watching the written word become lost to time. In This Is Not the End of the Book, that book's author, Umberto Eco, and his fellow raconteur Jean-Claude Carriere sit down for a dazzling dialogue about memory and the pitfalls, blanks, omissions, and irredeemable losses of which it is made. Both men collect...