" We can bring about a laissez-faire society, but only through the tremendous, invisible power of ideas. Ideas are the motive power of human progress, the force which shapes the world. Ideas are more powerful than armies, because it was ideas which caused the armies to be raised in the first place, and it is ideas which keep them fighting (if this weren’t true, political leaders wouldn’t have to bother with their tremendous propaganda machinery). When an idea gains popular support, all the guns in the world cannot kill it. "

― , The Market for Liberty