Bringing together a collection of this distinguished medievalist's most important and controversial work, heretofore scattered and frequently inaccessible, this book constitutes both an appropriate introduction for students new to medieval studies and a convenient compendium for scholars established in the field. Originally published in 1980. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.