Liberty. Justice. Nature. Law. First formulated millennia ago by the founding philosophers of the Western tradition, these basic concepts of human thought remain central to our conception of ourselves, our place in the world, and our relationships with others-that is, our politics. Readers encountering such broad political concepts, their practical expressions in political movements and systems of government, the ideas of influential ancient and modern political thinkers—or simply familiar or unfamiliar catchphrases for which they would like a succinct yet informative explanation—will welcome this accessible encyclopedic guide.

The major political concepts, themes, issues, movements, groups, and schools that have developed over time and shaped our modern world appear here in all their diversity, along with biographical entries and articles on the principal works of political theorists from Plato to John Rawls. Further, serious students and browsers alike will delight in the numerous entries on familiar quotations and political catchphrases, from the banality of evil and Big Brother to the war of all against all.