Mary Anne Warren argued that fetuses are not persons, and that it is therefore morally permissible to get an abortion. How does that argument go? On her view, what is the difference between human beings and persons? Don Marquis argued that abortion is almost always a serious moral wrong. What argument does he put forward to defend his view? Which position do you think is better and why? Both of those arguments turn crucially on the issue of the moral status of the fetus and questions about the wrongness of killing such an entity. Judith Jarvis Thomson approaches the abortion issue from an entirely different angle. What is her argument? What objections could be raised to her view?