Advocates use case descriptions to show that euthanasia or assisted suicide is sometimes justifiable. Yet even the seemingly clearest cases can prove deeply troubling.

Proponents of assisted suicide who base their arguments on autonomy err in ways that are little attended to. In the absence of a substantive theory of the good, in neither a descriptive nor an ascriptive sense can the concept of autonomy distinguish those acts that should be morally prohibited from those that may be permitted. And to impose a particular theory of the good, whether individual liberty or the sanctity of life, violates the autonomy of those who do not share (...) a commitment to that theory. (shrink)