Cicero's and are his major works of political philosophy. They offer his fullest treatment of fundamental political questions: Why should educated people have any concern for politics? Is the best form of government simple, or is it a combination of elements from such simple forms as monarchy, aristocracy, and democracy? Can politics be free of injustice? The two works also help us to think about natural law, which many people have considered since ancient times to provide a foundation of unchanging, universal principles of justice.