Abstract

According to Jeff McMahan, a person is liable to be killed in self-defense if the person has acted in such a way that to kill him would neither wrong him nor violate his rights. This account of self-defense has spawned something of a cottage industry in the philosophical literature of such “liability-based accounts.” Liability-based accounts of self-defense, however, are deficient for two reasons. First, they fail to account for the moral residue that remains in the wake of the justified killing of another human being. Second, they are incapable of explaining cases in which people rationally opt not to kill in cases of justified self-defense. As an alternative, the chapter offers a reasons-based account of self-defense and demonstrates its capacity both to avoid counterintuitive views regarding the moral position of those who kill in self-defense and to explain a wider range of salient considerations regarding the morality of self-defense.