What does it mean to be a person? This is one of the central moral questions of our age. Bioethics is particularly engaged with this question. What is human life? When does it begin and end? Does human life have any intrinsic value, dignity, or rights to be protected? Are there any boundaries regarding the manipulation of genetic material, cloning, or embryos? We tend to speak in strong terms about “human rights” and “civil rights” as though there were a secure, generally accepted basis for them to stand on. But is this true? The conversation often seems to ignore the fact that different worldviews lead to widely divergent answers to the question “What is a person?” Most secular modern or post-modern conceptualizations of the nature of personhood are not robust enough to support the notions of human rights and civil rights that we tend to assume.