This piece at Liberalism.org and another one I'll post shortly strike me as good companions to my first entry from a few days ago.

Yours, Mine, or Ours? Liberals Need a Theory of the State
Economist Michael Munger outlines how public goods may be provided with little or no state involvement. Private road associations are viable, and better tolling technology lessens the need for state action. That's true of many other technologies, making efficient government a moving target.
liberalism.org
