Pope John Paul II, in his 1995 encyclical Evangelium Vitae (The Gospel of Life), succinctly outlined the Church's long-held teaching on the sanctity of human life in light of current cultural trends. The Pontiff labels the modern notion of “compassionate” aid in dying as “false mercy,” and alludes to the situation in Eden, where man first became self-appointed arbiter of “good and evil.”
SUICIDE IS always as morally objectionable as murder. The Church's tradition has always rejected it as a gravely evil choice. Even though a certain psychological, cultural and social conditioning may induce a person to carry out an action which so radically contradicts the innate inclination to life, thus lessening or removing subjective responsibility, suicide, when viewed objectively, is a gravely immoral act. In fact, it involves the rejection of love of self and the renunciation of the obligation of justice and charity towards one's neighbor, towards the communities to which one belongs, and towards society as a whole. In its deepest reality, suicide represents a rejection of God's absolute sovereignty over life and death, as proclaimed in the prayer of the ancient sage of Israel: “You have power over life and death; you lead men down to the gates of Hades and back again” (Wis 16, 13; cf. Tb 13:2).
To concur with the intention of another person to commit suicide and to help in carrying it out through so-called “assisted suicide” means to cooperate in, and at times to be the actual perpetrator of, an injustice which can never be excused, even if it is requested. In a remarkably relevant passage St. Augustine writes that “it is never licit to kill another: even if he should wish it, indeed if he request it because, hanging between life and death, he begs for help in freeing the soul struggling against the bonds of the body and longing to be released; nor is it licit even when a sick person is no longer able to live.”
Even when not motivated by a selfish refusal to be burdened with the life of someone who is suffering, euthanasia must be called a false mercy, and indeed a disturbing “perversion” of mercy. True “compassion” leads to sharing another's pain; it does not kill the person whose suffering we cannot bear. Moreover, the act of euthanasia appears all the more perverse if it is carried out by those, like relatives, who are supposed to treat a family member with patience and love, or by those, such as doctors, who by virtue of their specific profession are supposed to care for the sick person even in the most painful terminal stages.
The choice of euthanasia becomes more serious when it takes the form of a murder committed by others on a person who has in no way requested it and who has never consented to it. The height of arbitrariness and injustice is reached when certain people, such as physicians or legislators, arrogate to themselves the power to decide who ought to live and who ought to die. Once again we find ourselves before the temptation of Eden: to become like God who “knows good and evil” (cf. Gn 3, 5). God alone has the power over life and death: “It is I who bring both death and life” (Dt 32, 39; cf. 2 Kgs 5, 7; 1 Sm 2, 6). But he only exercises this power in accordance with a plan of wisdom and love. When man usurps this power, being enslaved by a foolish and selfish way of thinking, he inevitably uses it for injustice and death. Thus the life of the person who is weak is put into the hands of the one who is strong; in society the sense of justice is lost, and mutual trust, the basis of every authentic interpersonal relationship, is undermined at its root.
—Evangelium Vitae (61)