Plutarch's "Comparative Biographies" is a collection of biographies of outstanding ancient Greek and Roman figures, which consists of four volumes. The fourth volume contains biographies of such figures as Servius Tullius, Solon, Publicola, Pyramus, Licinius, Numa Pompilius and many others. Plutarch addresses important ethical, political and philosophical questions, revealing the inner world of each hero and highlighting their influence on history. Due to the high style of writing and deep analysis, the collection of "Comparative Biographies" has become a classic work that remains relevant to this day."