"The virtuosity of the scholarship, the critical resourcefulness, the acuteness of observation—all these add new vitality and new dimensions to the familiar subject of literary 'borrowing.' The old subject will not be the same again."—Arnold Stein
"This is a brilliant inquiry into a subject that had never before been systematically investigated. Critics of poetry will be continually exhilarated by the possibilities opened up here."—Richard Poirier