Continuing the paperback edition of Charles S. Singleton's translation of , this work provides the English-speaking reader with everything he needs to read and understand the . This volume consists of the prose translation of Giorgio Petrocchi's Italian text (which faces the translation on each page); its companion volume of commentary is a masterpiece of erudition, offering a wide range of information on such subjects as Dante's vocabulary, his characters, and the historical sources of incidents in the poem. Professor Singleton provides a clear and profound analysis of the poem's basic allegory, and the illustrations, diagrams, and map clarify points that have previously confused readers of .