The famous philosopher known for his contributions to ethics and politics in ancient Greece is Aristotle. A student of Plato and a prolific thinker, Aristotle wrote extensively on various subjects, including ethics, politics, metaphysics, and natural sciences. His work, "Nicomachean Ethics," laid the foundation for Western moral philosophy, advocating for virtue ethics and the importance of character. In politics, his influential text, "Politics," explored the role of the state and discussed various forms of government, advocating for a balance between democracy and oligarchy. Aristotle's ideas profoundly shaped Western thought and continue to influence philosophy, politics, and ethics today.