Best Books on Political Philosophy: From Plato to the Modern State

Political philosophy is not about current events. It is about the questions underneath current events: What justifies political authority? What do we owe each other? What makes a law legitimate? When, if ever, is violence justified to resist power? These questions do not have final answers, but thinking about them carefully changes how you see the political world around you. The texts below span roughly twenty-four centuries. Each one was written in response to a specific political crisis, and each one reached conclusions that still inform debate today. ## The First Blueprint Plato's *The Republic* is the founding document of Western political philosophy. Written in the fourth century BC, probably in response to the trial and execution of Socrates, it is structured as a dialogue in which Socrates asks what justice is and ends up describing an ideal city-state. The conclusions Plato reaches are disturbing by modern standards. The ideal city would be ruled by philosopher-kings, educated from birth to love wisdom more than power. It would practice systematic censorship of art and literature. It would assign citizens to social classes based on their nature, with mobility between classes strictly controlled. Children would be raised communally. You should read *The Republic* not because Plato was right, but because he was asking the right questions, and because his answers force you to articulate why you disagree. What does justify political authority? Why should anyone follow the rules of a state they did not choose to be born into? Plato's answers are wrong in ways that are clarifying. The book is also one of the great works of prose literature. Plato was not just a philosopher; he was a dramatist, and the dialogues have a quality of genuine intellectual theatre. ## The Case for Absolute Power Thomas Hobbes wrote *Leviathan* in 1651, shortly after the English Civil War, which had killed roughly 200,000 people. His argument begins from a thought experiment: what would life be like without political authority? His answer is famous: solitary, poor, nasty, brutish, and short. In the "state of nature," everyone is at war with everyone else, because there is no agreed authority to settle disputes. From this starting point, Hobbes argues that rational people would agree to hand absolute authority to a sovereign, a monarch or assembly, in exchange for physical security. The sovereign's power must be absolute because any limitation creates the possibility of conflict about where the limits lie, and conflict means the state of nature returns. Hobbes is most interesting when read as a serious argument for a position most people now reject. Why exactly is absolute sovereign power unacceptable? Hobbes has considered that question, and his answer is that you are wrong. Engaging with that argument seriously is more valuable than dismissing it. *Leviathan* is a long book. The first two parts, on human nature and commonwealth, are the essential ones. The later parts, on scripture and the church, are less central to his political argument. ## Justice as Fairness John Rawls's *A Theory of Justice*, published in 1971, is the most influential work of political philosophy of the twentieth century. Rawls proposed a thought experiment: imagine you had to design the basic institutions of society from behind a "veil of ignorance," not knowing what position you would occupy in that society, your class, race, gender, or natural talents. What principles would rational people choose? His answer was two principles. First, everyone should have the most extensive equal basic liberties compatible with the same liberties for others. Second, social and economic inequalities should be arranged to benefit the least-advantaged members of society. The second principle, which Rawls called the "difference principle," is the controversial one. It allows inequality, but only when inequality makes the worst-off people better off than they would be under a more equal arrangement. This rules out many real-world distributions of wealth and income. *A Theory of Justice* is demanding, but Rawls writes with unusual care and precision. If you find the full text too long, his later *Justice as Fairness: A Restatement* covers the core arguments more concisely. ## Why These Three Together Plato, Hobbes, and Rawls represent three fundamentally different approaches to political authority. Plato grounds authority in wisdom and virtue. Hobbes grounds it in the rational need for security. Rawls grounds it in principles that free and equal persons would choose for themselves. Reading them together, you see that the central questions of political philosophy have not changed in two and a half thousand years. What has changed is the range of considered answers, and the social conditions that make some answers more or less plausible. You do not need to agree with any of them. You need to be clear about why you disagree. ## Further Reading [Explore more philosophy books](/category/philosophy)