This volume comprises an edition with introduction and commentary of the first book of Horace's Epistles. These imaginary letters in verse represent the poet's most original contribution to Latin literature. The introduction discusses fully the invention of the new poetic form and the carefully devised style in which the letters are composed. There is also discussion of the addressees and of the main topics, as well as of the lay-out of the poems and the organisation of the book as a whole. The common view that the poems mark a conversion of Horace to philosophy is reassessed. The commentary offers analyses of the tone of the language, particularly the poetic qualities of Horatian usage. There is an ample index.