This text explores the main questions of political philosophy and looks at some of the most influential answers, from the ancient Greeks to the present day. Each chapter takes on a particular question or controversy. The natural starting-point is political power, the right to command. The first chapter considers the question of what would happen in a ‘state of nature’ without government, while the second tackles the problem of political obligation. The third chapter is concerned with democracy, asking whether a state should be democratic, for example, or whether there is any rationale for preferring rule by the people to rule by an expert. The next two chapters deal with liberty and property. The text concludes by focusing on questions that have drawn greater attention in more recent decades, such as issues of gender, race, disability, sexual orientation, immigration, global justice, and justice to future generations.