Murray Rothbard: Libertarians must come to realize that parroting ultimate principles is not enough for coping with the real world.

He’s warned libertarians on numerous occasions against becoming ideological purists who simply repeat slogans like “taxation is theft” or “end the Fed” without actually understanding the step-by-step, strategic work needed to bring about meaningful change.

Even Rothbard himself worked with paleoconservatives, libertarian minarchists and others despite disagreements to move liberty-oriented ideas forward.