AQUINO Journal of Philosophy

Scientific research has transformed medicine and expanded humanity's capacity to prevent disease, restore bodily functions, and overcome forms of infertility. Organ transplantation, assisted reproductive technologies, and embryonic stem-cell research are among the developments that most clearly illustrate both the promise and the ethical complexity of contemporary biomedical science. The central problem is not whether science should advance, but whether every scientifically possible intervention is morally permissible. This article examines that question through a philosophical-theological account of human dignity and the inviolability of human life. Drawing principally upon Kant's conception of humanity as an end in itself, Thomistic anthropology, and the Christian understanding of the human person as created in the image of God, it evaluates organ transplantation, artificial reproductive technologies, and embryonic stem-cell research. The article argues that scientific progress is ethically legitimate when it serves the integral good of the person while respecting bodily integrity, informed consent, justice, and the intrinsic value of human life. Organ transplantation can therefore constitute an ethically commendable act under appropriate conditions, whereas certain forms of assisted reproduction and embryonic stem-cell research raise deeper questions concerning the treatment of nascent human life as an object of production, selection, or experimentation. The article concludes that the proper limit of biomedical research is not opposed to science but the recognition that scientific power must remain ordered to human dignity and the common good.

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