For the sake of consistency with settled principles from other theological and ethical questions, there is a need for a Christian reexamination of in vitro fertilization (IVF). Both Old and New Testaments demonstrate that human personal life begins at conception or fertilization. Additionally, the Bible teaches that human beings are persons in the image of God from the very beginning of their existence. Thus, it can be concluded that the embryos created via IVF are persons in God’s image. Applying this (...) to the destruction and freezing of embryos, several limitations or restrictions present themselves—embryos should not be purposefully destroyed or wasted, all embryos ought to be implanted, and embryos should not be frozen. Ultimately, however, due to the immense quantity of embryo wastage, it is concluded that Christians should avoid this form of assisted reproductive technology and consider it a pro-life issue. (shrink)

There remains a need to properly analyze the metaphysical assumptions underlying two organ procurement policies: presumed consent and organ sales. Our contention is that if one correctly understands the metaphysics of both the human body and material property, then it will turn out that while organ sales are illiberal, presumed consent is not. What we mean by illiberal includes violating rights of bodily integrity, property, or autonomy, as well as arguing for or against a policy in a manner that runs (...) afoul of Rawlsian public reason. (shrink)

This paper presents an account of how human spontaneous embryonic chimeras are formed. On the prevalent view in the philosophical literature, it is said that chimeras are the product of two embryos that fuse to form a new third embryo. We call this version of fusion synthesis. In contrast to synthesis, we present an alternative mechanism for chimera formation called incorporation, wherein one embryo incorporates the cells of a second embryo into its body. We argue that the incorporation thesis explains (...) other types of chimera formation, which are better understood, and is more consistent than synthesis with what is known about embryological development. Incorporation also has different implications than synthesis and so avoids the philosophical puzzles that are often said to accompany embryonic chimera formation—puzzles which pose problems to the human embryo’s persistence from fertilization to the fetal stage of human development. (shrink)

Catholic opponents of abortion and embryonic stem cell research usually base their position on a hylomorphic account of ensoulment at fertilization. They maintain that we each started out as one-cell ensouled organisms. Critics of this position argue that it is plagued by a number of intractable problems due to fission (twinning) and fusion. We're unconvinced that such objections to early ensoulment provide any reason to doubt the coherence of the hylomorphic account. However, we do maintain that a defense of ensoulment (...) at fertilization must deny that we're essentially organisms. (shrink)

This paper presents a new anti-criterialist view, Brutal Personal Identity (BPI). According to BPI, personal identity is a quasi-fundamental fact, which is metaphysically grounded in brute facts about absolutely fundamental personhood. By reversing the order of metaphysical explanation, BPI is not a form of identity mysticism as Dean Zimmerman asserts. Instead, BPI has even the potential to lay a solid foundation for developing an appropriate account of mentality and first-person perspectives. Furthermore, a comparison between BPI and soul theory is provided (...) to show why BPI is better than its main anti-criterialist rival. This provides us a compelling reason for considering BPI in the debate over personal identity. (shrink)

What justifies our holding a person morally responsible for some past action? Why am I justified in having a special prudential concern for some future persons and not others? Why do many of us think that maximizing the good within a single life is perfectly acceptable, but maximizing the good across lives is wrong? In these and other normative questions, it looks like any answer we come up with will have to make an essential reference to personal identity. So, for (...) instance, it seems we are justified in holding X responsible for some past action only if X is identical to the person who performed that action. Further, it seems I am justified in my special concern for some future person only if he will be me. Finally, many of us think that while maximization within a life affects only one person, a metaphysical unity, maximization across lives affects many different, metaphysically distinct, persons, and so the latter is wrong insofar as it ignores this fundamental separateness of persons. (shrink)