The purpose of this essay is to stimulate academic discussion about the ethical justification of using human primordial stem cells for tissue transplantation, cell replacement, and gene therapy. There are intriguing alternatives to using embryos obtained from elective abortions and in vitro fertilisation to reconstitute damaged or dysfunctional human organs. These include the expansion and transplantation of latent adult progenitor cells.

It is argued that the use of induced pluripotent stem cells for regenerative therapy may soon be ethically practicable and could sidestep the various objections pertaining to other types of stem cell (human embryonic stem cells, and stem cells obtained by altered nuclear transfer or somatic cell nuclear transfer).

The Alexandrian theologian Origen wrote that God the Father exceeds the Son in a way that surpasses the Son’s own transcendence of creation, and he apparently did so in order to oppose those who disregarded Jesus’ statement that «the Father is greater than I» . Just a few years after Origen’s death, however, when correction of his Son of God theology was well underway, Arius radicalized the latent subordinationism present in Origen’s thought by placing the Son among created things. The (...) Arian tendency to associate the Son with the created realm can be traced back to the attempts of Methodius of Olympus and Eusebius of Caesarea to counter Origen’s doctrine of eternal creation. Arius claimed that Christ is called «Son» because he is the created instrument of God’s will, and he gained sympathy for this voluntaristic view by citing John 14:28. Here was irrefutable scriptural proof of the metaphysical priority of the Father over the Son who is a separate and yet perfect creature of God. (shrink)