Brian Doherty on Classical Liberalism's Radical Edge

For centuries, political philosophers have taken on their ideological opponents by proving that their foes' beliefs logically imply anarchism. This was long considered a self-evident reductio ad absurdum that falsifies a political claim: If you can't defend the state, you must be wrong. But reading George H. Smith's book The System of Liberty, Brian Doherty asks: What if they were all correct?