The problem of mutilation involved in organic transplantation for the benefit of a neighbor is highly controverted at the present time, Pope Pius XII discussed the legality of corneal transplants from the dead to the living (_The Pope Speaks_, Autumn, 1956, pp. 198 ff.), but he did not touch the matter of transplants from living bodies. In this controversial matter, the following principles seem to be clear:
1) Mutilation for the good of the neighbor cannot be justified by the principle of totality, for the subordination implied in the principle is characteristic of a physical, not a moral, not even the Mystical, body.
2) Minor mutilations, such as skin grafts or blood transfusions, are certainly permissible. The speculative basis is still a matter of dispute.
3) It is solidly probable extrinsically that organic transplantations may be permitted, possibly out of charity and for a proportionate reason. Some contend, however, that the act of mutilation involved is intrinsically evil and can not be justified by the extrinsic motive of charity.
Mutilation is lawful by public authority in punishment of a criminal; for if the state has the right to inflict death for serious crime, much more has it the right to indict the lesser punishment of mutilation. The expediency, however, of exercising the right must be judged in terms not only of punishment, but also of prevention of crime. Mutilation has no necessary connection (apart from special circumstances) with deterring criminals from further crime.
(b) In other cases mutilation is unlawful; for just as man is not the master of his life, neither is he the master of his limbs, and he commits a wrong against God, society, and the individual if he destroys parts of his body when neither public good nor private safety demands that this can be done. Thus, mutilation of a criminal performed by private authority is unlawful. Hence, a husband may not mutilate a man who has broken up his home.
Mutilation of an innocent person that it not necessary for his bodily safety is unlawful. Even spiritual good is not a sufficient reason; for example, one may not castrate oneself in order to escape temptation, for this operation does not take away passion, and, moreover, there are spiritual means which suffice against temptation. When Our Lord says that one should cut off a hand or foot that causes scandal (Matt., xviii. 8), He is speaking metaphorically of the avoidance of the occasions of sin. Much less is temporal good a sufficient reason for mutilation. Hence, a youth may not have his teeth pulled in order to escape military service; a pauper may not have his arm amputated in order to get larger alms; a boy may not be castrated in order to give him a better singing voice; a woman may not have the hysterectomy or other similar operations performed merely to prevent conception; a man may not have the operation of vasectomy performed on him in order to prevent generation.
1869. Morality of Sterilization. Mutilations which frustrate the power of procreation in men and women are called sterilization. Two kinds are distinguished; indirect, to remove diseased organs; direct, to prevent conception.
(a) Indirect sterilization (also called by many therapeutic) is lawful when it is necessary to save life or health. The ethical principle involved is the indirect voluntary or the principle of double effect. Hence, vasectomy may be used to prevent idiocy or death, or to remove or allay physiological abnormalities that bring on certain sexual perversities or disturbances, if it is likely that these evils are imminent or present and that the operation will be beneficial.
(b) Direct sterilization by public authority includes both punitive and eugenical sterilization. The latter was condemned by Pope Pius XI in _Casti Connubii_. In context the Holy Father was dealing with the false claims made in the name of eugenics that the State might legitimately sterilize those who by reason of hereditary defect might be considered likely to generate defective offspring. This position is vehemently rejected: “Public magistrates have no direct power over the bodies of their subjects. Therefore where no crime has taken place and there is no cause present for grave punishment, they can never directly harm or tamper with the integrity of the body, either for the reasons of eugenics or for any other reason. St. Thomas teaches this when, inquiring whether human judges for the sake of preventing future evils can inflict punishment, he admits that the power indeed exists as regards certain other forms of punishment, but justly and properly denies it as regards the maiming of the body.”