1. Michael Walzer, ‘Political Action: The Problem of Dirty Hands’, in M. Cohen, T. Nagel and T. Scanlon (eds.), War and Moral Responsibility Princeton, NJ: Princeton University Press, 1974, p. 63.
2. Quentin Skinner, ‘The State’, in Robert E. Goodin and Phillip Pettit (eds.), Contemporary Political Philosophy: An Anthology, Oxford: Blackwell, 1997, p. 9.
3. See Tyler Cowan, ‘Law as a Public Good: The Economics of Anarchy’, Economics and Philosophy 8 (1992).