There is a spirit that rules us … that we are chosen and prominently chosen to show the way to the nations of the world how they shall walk in the paths of liberty.

—WOODROW WILSON

All plans of government, which suppose great reformation in the manners of mankind, are plainly imaginary.

—DAVID HUME

Politics is an art and not a science, and what is required for its mastery is not the rationality of an engineer but the wisdom and the moral strength of a statesman.

—HANS J. MORGENTHAU

History is just littered with problems that were solved that were supposed to be impossible.

—PAUL WOLFOWITZ