According to the theory of intrinsic value and moral standing called the ‘substance view,’ what makes it prima facie seriously wrong to kill adult human beings, human infants, and even human fetuses is the possession of the essential property of the basic capacity for rational moral agency – a capacity for rational moral agency in root form and thereby not remotely exercisable. In this critique, I cover three distinct reductio charges directed at the substance view's conclusion that human fetuses have (...) the same intrinsic value and moral standing as adult human beings. After giving consideration to defenders of the substance view's replies to these charges, I then critique each of them, ultimately concluding that none is successful. Of course, in order to understand all of these things – the reductio charges, defenders of the substance view's replies to them, and my criticisms of their replies – one must have a better understanding of the substance view as well as its defense. Accordingly, I address the substance view's understanding of rational moral agency as well as present its defense. (shrink)

ABSTRACT This article defends the following argument: what makes you and I valuable so that it is wrong to kill us now is what we are (essentially). But we are essentially physical organisms, who, embryology reveals, came to be at conception/fertilisation. I reply to the objection to this argument (as found in Dean Stretton, Judith Thomson, and Jeffrey Reiman), which holds that we came to be at one time, but became valuable as a subject of rights only some time later, (...) in virtue of an acquired characteristic. I argue against this position that the difference between a basic, natural capacity and some degree of development of such a capacity is a mere difference in degree, that this position logically implies the denial of equal personal dignity, and that the selection of the required degree of development of a capacity is necessarily arbitrary. (shrink)

This essay explicates and evaluates the roles that fetal metaphysics and moral status play in Rosalind Hursthouse’s abortion ethics. It is motivated by Hursthouse’s puzzling claim in her widely anthologized paper Virtue Ethics and Abortion that fetal moral status and (by implication) its underlying metaphysics are in a way, fundamentally irrelevant to her position. The essay clarifies the roles that fetal ontology and moral status do in fact play in her abortion ethics. To this end, it presents and then develops (...) her fetal metaphysics of the potential and actual human being, which she merely adumbrates in her more extensive treatment of abortion ethics in her book Beginning Lives. The essay then evaluates her fetal ontology in light of relevant research on fetal neural and psychological development. It concludes that her implied view that the late-stage fetus is an actual human being is defensible. The essay then turns to the analysis of late-stage abortions in her paper and argues that it is importantly incomplete. (shrink)