Publisher’s Note: When a woman is pregnant, how should we understand the moral status of the life within her? How should we understand its status as conceptus, as embryo, when an early or again matured fetus? According to some, human life in all of these forms is inviolable: early human life has a moral status equivalent to a person from the moment of conception. According to others, such life has no intrinsic status, even late in pregnancy. According to still others, moral status emerges when sentience does. Until the fetus is conscious – a point somewhere at the end of the second trimester, it has no moral status at all; after it is conscious, it does.