Research book by academician D. C. Likhachev is dedicated to the greatest monument of ancient Russian literature - "Word about Igor's regiment" . The author sees his main task as to show the authenticity of the "Word" and its connection with the culture of his time. "The Word" is considered in the context of historical, political and aesthetic representations of the era, against the broad background of the historical and literary process of Ancient Russia. The author pays considerable attention to the controversy around the "Words about Igor's regiment" . The book is intended for specialists in ancient Russian literature, and a wide range of readers interested in Russian history.