The word “libertarian” is used in both a formal sense and an informal sense. When a socialist Liberal politician exclaims that the state has no place in the bedrooms of the nation, he is called a civil “libertarian”. When a theocratic Conservative politician calls for a reduction in taxes, he too is called a “libertarian”. And when an “anarcho-capitalist” economist calls for the elimination of government, he is called a “libertarian”. So what does the word actually mean?