 As was noted earlier in Section 3, there is a widespread belief concerning the moral acceptability of so-called passive (voluntary) euthanasia, wherein life-sustaining or life-prolonging measures are withdrawn or withheld in response to a competent patient’s request. The reason why passive (voluntary) euthanasia is said to be morally permissible is that the patient is simply allowed to die because steps are not taken to preserve or prolong life. This happens, for example, when a dying patient requests the withdrawal or the withholding of measures whose administration would be medically futile, or unacceptably burdensome. By contrast, active (voluntary) euthanasia is said to be morally impermissible because it is claimed to require an unjustifiable intentional act of killing to satisfy the patient’s request (cf., for example, Finnis, 1995; Keown in Jackson and Keown 2012).