In clinical ethics, we must determine whether the person expresses—or has expressed—a genuine, authentic will that reflects their autonomy. Medical logic appears to respect patients’ rights (to give consent, and to do so in an informed manner), but it does not necessarily take an interest in people’s autonomy. Consent to die is part of a particularly complex question: it is not merely a matter of living or dying, but of asking how one will live. And even for people who are no longer able to express their views, decisions should be made based on who the person was, or even what they would have wanted.