Fr. Pablo Requena Meana, MD STD is a professor of Moral Theology at the Pontifical University of the Holy Cross. He received his MD in 1993 from Universitat de València in Spain and has a certificate in Bioethics from the Institute of Bioethics, Catholic University of the Sacred Heart. STD with the dissertation “Modelos de bioética clínica. Presentación crítica del principialismo y la casuística” (Pontifical University of the Holy Cross, Rome, Italy). Fr. Requena’s main interests are in principlism and methods for bioethics, sacrality of life and dignity, end of life issues.