Pius XI, 1922-1939

Therefore, honorable and experienced physicians praiseworthily endeavor to protect and to save the lives of both the mother and the offspring; on the other hand, most unworthy of the noble name of physician and of commendation would they prove themselves, as many as plan for the death of one or the other under the appearance of practising medicine or through motives of false pity. . . .

2244. Now what is put forth in behalf of social and eugenic indication, with licit and honorable means and within due limits, may and ought to be held as a solution for these matters; but because of the necessities upon which these problems rest, to seek to procure the death of the innocent is improper and contrary to the divine precept promulgated by the words of the Apostle: "Evil is not to be done that good may come of it" [Rom. 3:8].

Finally, those who hold high office among nations and pass laws may not forget that it belongs to public authority by appropriate laws and penalties to defend the lives of the innocent, and the more so as those whose lives are endangered and are attacked are less able to defend themselves, among whom surely infants in their mothers' wombs hold first place. But if public magistrates not only do not protect those little ones, but by their laws and ordinances permit this, and thus give them over to the hands of physicians and others to be killed, let them remember that God is the judge and the avenger of innocent “blood which cries from earth to heaven” [Gen. 4:10].

The Right to Marriage, and Sterilization ¹

[From the same Encyclical, “Casti Connubii,” Dec. 31, 1930]

2245. Finally, that pernicious practice should be condemned which is closely related to the natural right of man to enter into matrimony, and also in a real way pertains to the good of the offspring. For there are those who, overly solicitous about the ends of eugenics, not only give certain salutary counsels for more certainly procuring the health and vigor of the future offspring—which certainly is not contrary to right reason—but also place eugenics before every other end of a higher order; and by public authority wish to prohibit from marriage all those from whom, according to the norms and conjectures of their science, they think that a defective and corrupt offspring will be generated because of hereditary transmission, even if these same persons are naturally fitted for entering upon matrimony. Why, they even wish such persons even against their will to be deprived by law of that natural faculty through the operation of physicians; and this they propose not as a severe penalty for a crime