Abstract
Kevin O’Rourke argues that Aquinas’s concept of a “spiritual goal of life,” to which Pius XII refers in his famous allocution of 1957, serves as a basis for declaring that certain treatments, such as artificial nutrition and hydration [ANH] for patients in a persistent vegetative state [PVS], are “extraordinary” and thus morally optional. I examine whether O’Rourke properly interprets Aquinas’s concept in this regard and conclude that he is correct in his assessment and that ANH is properly understood, in typical and properly diagnosed cases of PVS, as extraordinary treatment the use of which is not morally obligatory.