'A new book by Jerome McGann is an event, though there have been many such events over his long career. But a new book by him about Byron is a special kind of event. No other scholar has done as much for Byron as McGann has, and few living scholars as much for any single author as he has done for Byron. This book marks a kind of return to origins since, like McGann's first book, Fiery Dust, this one focuses on Byron's work before Don Juan. The new emphasis, however, falls on Byron's relationship to language and poetic craft and on how it differs from that of his major contemporaries. Playful, allusive, and itself 'adverse,' McGann's style in this book, like Byron's own, means to set our language free.' James K. Chandler, William K. Ogden Distinguished Service Professor, University of Chicago