The most fundamental problem with libertarianism is very simple: freedom, though a good thing, is simply not the only good thing in life. Simple physical security, which even a prisoner can possess, is not freedom, but one cannot live without it. Prosperity is connected to freedom, in that it makes us free to consume, but it is not the same thing, in that one can be rich but as unfree as a Victorian tycoon’s wife. A family is in fact one of the least free things imaginable, as the emotional satisfactions of it derive from relations that we are either...