The dominant conception of brain death as the death of the whole brain constitutes an unstable compromise between the view that a person ceases to exist when she irreversibly loses the capacity for consciousness and the view that a human organism dies only when it ceases to function in an integrated way. I argue that no single criterion of death captures the importance we attribute both to the loss of the capacity for consciousness and to the loss of functioning of (...) the organism as a whole. This is because the person or self is one thing and the human organism is another. We require a separate account of death for each. Only if we systematically distinguish between persons and human organisms will we be able to provide plausible accounts both of the conditions of our ceasing to exist and of when it is that we begin to exist. This paper, in short, argues for a form of mind-body dualism and draws out some of its implications for various practical moral problems. (shrink)

Although the belief that killing is normally wrong is as universal and uncontroversial a moral belief as we are likely to find, no one, to my knowledge, has ever offered an account of why killing is wrong that even begins to do justice to the full range of common sense beliefs about the morality of killing. Yet such an account would be of considerable practical significance, since understanding why some killings are wrong should help us to determine the conditions in (...) which killing is not wrong. For, in those cases in which the reasons why killing is wrong do not apply, killing may be permissible or, if there are positive reasons that favour it, even morally required. (shrink)

What does the prospect of being able to alter a human being's “natural assets” by genetic engineering imply for our understanding of the requirements of justice, and of equal opportunity in particular? Although their proponents are reluctant to admit it, some of the most prominent contemporary theories of justice yield a quite radical conclusion: If safe and effective intervention in the genetic “natural lottery” becomes feasible, there will be at least a strong prima facie case for doing so in the (...) name of equality of opportunity , if this is the most effective way to meet the demands of justice. (shrink)