Gulliver reaches the land of the Houyhnhnms, rational horses who embody logic, morality, and harmony, in stark contrast to the Yahoos?brutish human-like creatures. He comes to admire the Houyhnhnms and despise his own species, feeling ashamed of being human. Their society is orderly and peaceful, yet its emotionless perfection raises unsettling questions. Eventually, Gulliver is deemed unfit to remain and is forced to leave. Returning home, he finds himself unable to relate to humans and lives in isolation. This final voyage offers a deep reflection on human nature and the limits of civilization.