The Prince
Machiavelli on political power.
Leviathan
Hobbes on the social contract.
Two Treatises of Government
Locke on government.
The Social Contract
Rousseau on the social contract.
On Liberty
Mill on liberty.
Reflections on the Revolution in France
Burke on the French Revolution.
The Federalist Papers
Hamilton, Madison, and Jay on the Constitution.
Common Sense
Paine on common sense.
Civil Disobedience
Thoreau on civil disobedience.
The Communist Manifesto
Marx and Engels on communism.
The Road to Serfdom
Hayek on the road to serfdom.