Plutarch's Parallel Lives is a sequence of biographies of eminent Greeks and Romans, arranged in pairs so that a figure from each tradition stands beside the other. In this edition the lives run from legendary founders such as Theseus and Romulus through lawgivers, generals, and statesmen down to the late Roman republic, with men like Lycurgus, Solon, Pericles, Alexander, Caesar, and Pompey among them.
The governing method is announced at the opening of the life of Alexander. Plutarch warns that he will epitomize rather than exhaust the great deeds of his subjects, because his design is not to write histories but lives. The most glorious exploits, he argues, do not always give the clearest view of virtue or vice; a smaller matter, an expression or a jest, can inform us better of a man's character and inclinations.
From this follows his characteristic texture. The narratives are dense with anecdotes, omens, reported sayings, and turns of fortune, and Plutarch lingers on whichever detail best reveals the soul of the man, comparing himself to a painter who is most exact about the face. He weighs his sources openly, notes where the record is uncertain or contradictory, and is candid when legend shades into fable, as in the very first life of Theseus.
The pairing is not decoration. After most pairs Plutarch supplies a formal comparison that sets the two men's actions side by side and asks which showed the greater courage, justice, or restraint. The comparison of Romulus with Theseus, for instance, balances free-willed enterprise against action forced by necessity, and self-interest against service to others, leaving the reader to judge.
The cumulative aim is moral and educational rather than merely historical. By presenting noble and flawed lives together, Plutarch offers patterns of conduct to imitate and to avoid, and invites reflection on how ambition, fortune, temperament, and habit shape what a powerful person becomes. The work has endured less as a chronicle of events than as a gallery of characters examined for their virtues and their faults.