The first right of the human person is his life . . . It does not belong to society, nor does it belong to public authority in any form to recognize this right for some and not for others; all discrimination is evil. . . Any discrimination based on the various stages of life is no more justified any other discrimination. . . . In reality, respect for human life is called for from the time that the process of generation begins. From the time that the ovum is fertilized, a life is begun which is neither that of the father nor of the mother; it is rather the life of a new human being with his own growth.
Declaration on Procured Abortion, Congregation for the Doctrine of the Faith (1974), paragraphs 11-12.