1. The Second World War, Winston S. Churchill

2. The Gulag Archipelago, Aleksandr I. Solzhenitsyn

3. Homage to Catalonia, George Orwell

4. The Road to Serfdom, F. A. von Hayek

5. Collected Essays, George Orwell

6. The Open Society and Its Enemies, Karl Popper

7. The Abolition of Man, C. S. Lewis

8. Revolt of the Masses, José Ortega y Gasset

9. The Constitution of Liberty, F. A. von Hayek

10. Capitalism and Freedom, Milton Friedman

11. Modern Times, Paul Johnson

12. Rationalism in Politics, Michael Oakeshott

13. Capitalism, Socialism, and Democracy, Joseph A. Schumpeter

14. Economy and Society, Max Weber

15. The Origins of Totalitarianism, Hannah Arendt

16. Black Lamb and Grey Falcon, Rebecca West

17. Sociobiology, Edward O. Wilson

18. Centissimus Annus, Pope John Paul II

19. The Pursuit of the Millennium, Norman Cohn

20. The Diary of a Young Girl, Anne Frank

full list via nationalreview