The man who becomes a libertarian because he is inspired by the idea of liberty and free markets is like an alcoholic who tries to quench his thirst for alcohol by gazing at the labels in the bottles stacked on the shelves of a liquor shop. All that libertarianism can give you is the abstract theory of liberty and free markets. It will not give you a nation where the two values exist. A nation is not an abstraction. People are not the creatures of ideology. Politics is not an abstract theory. It is the domain of practical knowledge and skill. Since libertarianism lacks practical knowledge and skill, it cannot have a direct impact on politics.