This study attempts to give an interpretation of Horace’s final piece of his First Book of Epistles from the point of view of the ancient culture of books and literature. Horace’s Epistles expressly mention the Library of Palatine Apollo. From a distance, they refer to some of the principles of Augustan cultural politics which created the library itself, and also draw an accurate picture of the process of the auto-canonization process which created the (concept of the) golden age of Roman literature. First, the study outlines the basic characteristics of the Horatian epistle, then looks for answers to the following questions: what are the forms of literary publicity and how do libraries appear in the Epistles? What does the need for canonization mean? How is it possible to canonize the living? How does the concept of the golden age of Roman literature take shape in the literature around 10 BCE?