EN
The essay discusses a disagreement occurring in ethical assessment of in vitro fertilisation and some of the procedures involved in infertility treatment in NaProTechnology (Natural Procreative Technology). The disagreement has its roots in two fundamental principles: absolute respect for human life and concern for a truly human beginning of life. These principles are shown in the light of Christian anthropology, which facilitates its better understanding, and names the causes for their rejection in today’s culture. This rejection drives its force from the changes that have been taking place in modern times in understanding man and nature. Appreciation of nature, including human nature, is no longer strong enough to hold ethical norms. Modern culture treats nature as something plastic and dumb, where man fulfills his rationality and freedom, being himself the only source and maker of all ethical norms. Such treatment of nature renders proper understanding of the Christian ethics impossible, especially where it calls for a behaviour according to nature or warns against that contrary to nature. Only return to the classical idea of nature, enriched by Christian theology of creation, enables us to understand and accept the ethical norms discussed in this essay.