According to Glannon and Ross, for an act to be considered altruistic, it cannot be obligatory nor motivated by expectation of self-reward. Given that parents are obligated to help their children and stand to benefit greatly from donating, the authors conclude that parent to child organ donation is not altruistic. Are they correct? I am not sure. In my view, this is a semantic question and the answer depends upon how one defines altruism. Altruism is a complex subject that means different things to different people. If we say that an altruistic act is one that is performed voluntarily, is risky or costly to the actor, and is designed only to benefit others with no expectation of self-reward, then it may be difficult or impossible to identify any such acts. When one risks her own life to save a stranger, others may ask: “Did she really act solely to benefit another or was she motivated, at least in part, by a need to satisfy her conscience or a desire to feel good about herself?” This question is relevant to the motivation of living organ donors. In contrast to the authors' answer that strangers who donate organs do so only out of concern for other people, Carl Fellner argued that many living organ donors, even those who are not related to their recipients, act to benefit themselves. If Fellner is correct, and if organ donation by parents is not altruistic because of the possibility of self-reward, perhaps the same is true of organ donation by strangers.