Political philosophy

Political philosophy is the branch of philosophy that deals with fundamental questions about politics: the existence of the state, the extent of liberty, the pursuit of justice, the source of rights and the duties of citizens. One of the earliest political philosopher was Plato of Greece, whose Republic greatly influenced later political thought. Plato's student, Aristotle, further systematized the study of politics in philosophy and his principles were carried through the Middle Ages by the Scholastic philosophers such as Thomas Aquinas. In the Renaissance era, Machiavelli started the realist approach of political theory, which was also reflected in the writings of Thomas Hobbes. Another major turning point in politcal philosophy was the Enlightenment, where the foundation of modern liberal democracy was laid.

For many political philosophers, these questions are answered in part by what has been dubbed a social contract theory accounting for the origin of governments - this approach started with Thomas Hobbes and John Locke, but has been revived in recent years with the work of the American philosophers John Rawls and Robert Nozick.

The Enlightenment

Social contract theory

A breakthrough in political philosophy during this era was the emergence of social contract theory of legitimacy of the state. One of the first proponent of the theory was British philosopher Thomas Hobbes, who thought that the generation of government was from a "contract", or agreement between every man and every man to set up a government to maintain order and avoid chaos. John Locke changed the concept of social contract substantially and proposed inalienable natural rights of "life, liberty, and property". Jean-Jacques Rousseau and Immanuel Kant separately developed their own ideas on social contract and arrived at distinct conclusions on the political organization of mankind.

The Enlightenment concept of social contract was revived in the contemporary era by a philosopher of the Anglo-American analytic traiditon named John Rawls, who was influenced by Kant and expounded his theory of "origional position" and its relation to political justice.