1857. Indirect Suicide.—Indirect suicide is committed when one is the cause of an act or omission, indifferent in itself, but from which one foresees as a result that one’s life will be lost or notably shortened, This kind of “suicide” is lawful when and if the conditions for a case of double effect are present—in other words, if there is a proportionately grave reason for permitting the evil effect (see 103 sqq.). The following reasons are considered sufficient:
(a) the public good, for the welfare of society is a greater good than the life of an individual. Eleazar is praised because he exposed himself to death in order to deliver his people (I Mach., vi. 43 sqq.). It is not sinful, then, but rather obligatory for a soldier to advance against the enemy or to blow up an enemy fortification, though it be certain that his own death will result; nor is it wrong for a pastor to go about ministering to his flock during a pestilence, though it be certain that he will fall a victim to the plague. Explorers and experimenters may also risk their lives for the advancement of science;
(b) the good of another suffices for indirect suicide, when he is in extreme spiritual need. Indeed, there may be an obligation of charity to risk one’s life for the salvation of a soul (see 1166). Hence, it is lawful to go as a missionary to a country whose climate is so trying that strangers die there after a few years;
(c) the higher good of self (i.e., the good of virtue) justifies indirect suicide, when there is an urgent reason for exercising a virtue in spite of the peril of death. Thus, for the sake of charity a shipwrecked passenger may yield his place in the life-boat to his parent, wife, friend, or neighbor; for the sake of faith, one may refuse to flee in time of persecution (see 1006), or may refuse and should refuse to take food or drink offered as a mark of idolatry; for the sake of chastity a virgin, at the peril of her life, may jump from a high window or resist the assailant, although it does not seem that this is obligatory if no internal consent will be given to the rape; for the sake of justice, a criminal in the death house who has an opportunity to escape from prison, may decide to remain and be executed, or a malefactor condemned to die by starvation may refuse to take food secretly brought him; for the sake of mortification, one may practise moderate austerities, as by fastings, watchings, scourgings, hair-shirts, etc., which sometimes shorten life, though generally they lengthen it;
(d) the preferable temporal good of self suffices, that is, one may risk the danger of death to escape another danger that is more likely to happen or more terrible. Thus, a man in a burning building may leap from a high window, even though death from the fall is almost certain, for death by burning is more terrible; a prisoner who is about to be tortured to death may make a break for liberty if he sees a chance of escape, for death is more certain if he remains. On the same principle, one may engage in hazardous but useful occupations, such as working on high buildings, or as a diver or miner, for it is better to live a shorter time with employment and the necessities of life, and to be of service to the public, than to live a longer time without these advantages. But a worker should not undertake dangerous tasks for which he is unfitted or unprepared, and the employer is bound to safeguard the lives of the workers.
1858. The same reasons are not sufficient in all cases. (a) Thus, the greater the risk of death, the more serious the reason required. Hence, to save the money one has it might be lawful to jump from a second-story window, but not from a higher window when the fall would most likely kill one. (b) The more immediate the danger of death, the more serious the reason required. Thus, to save money one might lawfully enter a quarantined house, but the risk would not be permitted if the house were tottering in an earthquake. (c) The more notable the shortening of life, the greater the reason needed to permit it. Thus, if the practice of a certain mortification or labor reduces the expectancy of life for a few years, a lesser reason suffices than if it reduces the expectancy for ten or more years.
1859. Indirect suicide is unlawful and has the guilt of self-murder when the reason for risking death is frivolous or insufficient or sinful.
(a) Examples of insufficient reasons are found in the cases of persons who engage in occupations or actions that are very dangerous to life or limb but of little public or private value, as when for the sake of performing a feat a man walks a tight-rope, pricks himself with pins and needles, or puts his head into a lion’s mouth. But if the performer is very skillful and has no other means of livelihood, it seems that he may exercise his art for the sake of entertainment.
(b) Examples of sinful reasons for risking death are found in persons who abbreviate their lives by over-eating, drunkenness, habitual indulgence in strong spirits, or immoderate passion of any kind; and also in those who refuse to make use of the ordinary means for the preservation of health (see 1566 sqq.) or of the ordinary remedies against disease (see 1571). It is not necessary that one be anxious to live long (see 1063), but it is obligatory to use the normal means for the preservation of life, and those who notably neglect these means are guilty of indirect suicide.
1860. Is it suicidal to refuse a surgical operation pronounced necessary for life?