The new study provides a fresh and timely reassessment of the political philosophy of Hannah Arendt. While analysing the central themes of Arendt's work, Phillip Hansen also shows that her work makes a significant contribution to contemporary debates. Specifically, Hansen argues that Arendt provides a powerful account of what it means to think and act politically. This account can establish the grounds for a contemporary citizen rationality in the face of threat to a genuine politics. Amoung other issues, Hansen discusses Arendt's conception of history and historical action; her account of politics and of the distinction between public and private; her analysis of totalitarianism as the most ominous form of 'false ' politics; and her treatment of revolution. The book is a balanced and opportune reappraisal of Arendt's contributions to social and political theory. It will be welcomed by students and scholars in politics, sociology and philosophy.