I presented an earlier version of this paper to the Law and Philosophy Discussion Group in Los Angeles, whose members I would like to thank for their comments. In addition, I would also like to thank the following people for reading and providing written or verbal commentary on earlier drafts: Robert Mams, Rogers Albritton, G. A. Cohen, David Copp, Matthew Hanser, Craig Ihara, Brian Lee, Marc Lange, Derk Pereboom, Carol Voeller, and the Editors of Philosophy & Public Affairs. I owe (...) special thanks to Timothy Hall and Seana Shiffnn for their insightful and helpful comments. (shrink)

There may be circumstances in which it is morally justifiable intentionally to kill a person who is morally innocent, threatens no one, rationally wishes not to die, and does not consent to be killed. Although the killing would wrong the victim, it might be justified by the necessity of averting some disaster that would otherwise occur. In other instances of permissible killing, however, the justification appeals to more than consequences. It may appeal to the claim that the person to be (...) killed has acted in such a way that to kill him would neither wrong him nor violate his rights, even if he has not consented to be killed or to be subjected to the risk of being killed. In these cases, I will say that the person is liable to be killed. Although I borrow the notion of liability from legal theory, and although much of what I say will be informed by the literature on liability in both tort law and criminal law, my concern in this article is with moral rather than legal liability. (shrink)

Why do we need government? A common view is that government is necessary to constrain people's conduct toward one another, because people are not sufficiently virtuous to exercise the requisite degree of control on their own. This view was expressed perspicuously, and artfully, by liberal thinker James Madison, in The Federalist, number 51, where he wrote: “If men were angels, no government would be necessary.” Madison's idea is shared by writers ranging across the political spectrum. It finds clear expression in (...) the Marxist view that the state will gradually wither away after a communist revolution, as unalienated “communist man” emerges. And it is implied by the libertarian view that government's only legitimate function is to control the unfortunate and immoral tendency of some individuals to violate the moral rights of others. (shrink)

But what if in order to save 0nc’s life one has to ki]1 another person? In some cases that is obviously permissible. In a case I will call Villainous Aggrcssor, you are standing in :1 meadow, innocently minding your own business, and 21 truck suddenly heads toward you. You try to sidestep the truck, but it tums as you tum. Now you can sec the driver: he is a mam you know has long hated you. What to do? You cannot (...) outrun thc truck. Fortunately, this is not pure nightmare: you just happen to have em antitank gun with you, and can blow up the truck. Of course, if you do this you will kill thc driver, but that does not matter; it is morally permissible for you to blow up thc truck, driver and 211, in defense of your life. (shrink)