(a) Thus, in reference to the intention, it is voluntary or involuntary, according as it proceeds from knowledge and choice, or as it is committed without realization of what is done or without the intention to produce death. Examples of involuntary suicide are a person who is temporarily insane on account of impending calamity and drowns himself, and a person who, attempting to frighten another by pretending to hang himself, actually strangles to death. It would be a mistake to say that no person who commits suicide is free, but no doubt a large percentage of those who kill themselves are not responsible for their act.
(b) In reference to the mode, suicide is direct, if that which is done tends from its nature to the death of the person who does it (e.g., firing a pistol into one’s brain); it is indirect, if that which is done tends from its nature to another end (e.g., to struggle with a criminal who is firing a revolver). Direct suicide is committed in many ways, all of which can be reduced to positive (e.g., the eating or drinking of deadly poison) and negative (e.g., the refusal to eat or drink anything).
1853. The difference between direct and indirect suicide is also explained as follows: (a) direct suicide is an act or omission that has but one effect, namely, death (e.g., taking deadly poison); (b) indirect suicide is an act or omission that has two effects, one of which is the peril of death. This peril of death is certain, if death always follows (e.g., jumping from the roof of a skyscraper); proximate, if death usually follows (e.g., jumping from a third- or fourth-story window); remote, if death now and then follows (e.g., jumping from a second-story window).
1854. Sinfulness of Suicide.—Voluntary and direct suicide is always a most grave sin, if committed without due authority (i.e., the command of God).
(a) It is a grave injury against the rights of God, for it usurps His authority, refuses Him the service He desires, spurns the gift He has bestowed, dishonors the image of God (Gen., ix. 6), and destroys the property of God: “Thou, O Lord, hast the power of life and death” (Wis., xvi. 13).
(b) It is an offense against society, for the community has a right to be benefited by the lives of its members, and to receive a return for the protection and assistance it affords them. Moreover, death by suicide is usually felt as a great sorrow and disgrace by the relatives of the departed, and it has a demoralizing effect on many persons of suggestible minds. The fact that the death of this or that man is not felt as a loss by a family or the State, but rather as a relief, is no argument; for if suicide were left to human decision, how many fatal mistakes would be made (see 460)! Persons valuable to society would rashly kill themselves, fearing in a mood of depression that they were worthless; others who could contribute nothing in material ways would destroy themselves and deprive their fellow-men of an example of fortitude, or at least of the opportunity of showing charity and mercy to the needy.
(c) Direct and voluntary suicide is a sin against the deepest natural inclination, for self-preservation is called the first law of nature (see 298), and also against that love of self which charity requires (see 1136 sqq.). Since charity to self is more obligatory than charity to the neighbor, suicide is a more serious sin than other forms of homicide. Nor is it excused by the desire of some good for self. The suicide does not better himself by his act, for, since he has not fulfilled his trust in this life, what can he expect in the next life? He escapes the lesser evils of physical miseries or moral temptations, but he incurs the greater evils of physical death and of moral cowardice and defeat, to say nothing of his punishment in the hereafter.
1855. Cooperation in Suicide.—Cooperation in suicide has the guilt of unlawful homicide. (a) Thus, those who incite, advise, command, or assist another to commit suicide are guilty of moral murder. (b) Those who carry out together a suicide pact are guilty both of suicide and of moral murder.
1856. Permission or Authorization to Commit Suicide.—(a) Divine authority could command or permit suicide, since God has the power over life and death. But whether God has ever done this is uncertain. Some argue for the affirmative from the death of Sampson, who pulled down the house upon himself saying: “Let me die with the Philistines” (Judges, xvi. 30), and of Razias who killed himself to escape ill-usage (II Mach., xiv. 37 sqq.), and from the acts of certain female martyrs who from love of God or from the desire to preserve chastity rushed to their deaths. But others think that invincible ignorance may explain these cases. The act of Sampson may also be understood as indirect suicide lawfully committed for the public good of his country.
(b) Human authority, according to some authors, could authorize a condemned malefactor really guilty of a capital crime to execute himself; for, they argue, there is little difference between opening one’s mouth to swallow poison administered by an executioner and taking it with one’s own hands, as was done by Socrates. Others deny that God has given the State the authority to order suicide, and they declare that it is both unnecessary and inhuman to force a condemned man to be his own executioner. Still others believe that the State could command self-execution, at least in necessity, but that such a punishment is so strange, cruel and unnatural that it should be avoided; for, if it is shocking to ask a father to execute his child, much more shocking would it be to ask a man to kill himself. The argument is inconclusive which says that because it is lawful to perform an act preparatory for death, but which is indifferent and would never cause death (such as opening the mouth for poison), it is also lawful to perform the act which inflicts death (such as taking the poison).