Evangelium Vitae §71

⁷¹ It is therefore urgently necessary, for the future of society and the development of a sound democracy, to rediscover those essential and innate human and moral values which flow from the very truth of the human being and express and safeguard the dignity of the person: values which no individual, no majority and no State can ever create, modify or destroy, but must only acknowledge, respect and promote. Consequently there is a need to recover the basic elements of a vision of the relationship between civil law and moral law, which are put forward by the Church, but which are also part of the patrimony of the great juridical traditions of humanity. Certainly the purpose of civil law is different and more limited in scope than that of the moral law. But "in no sphere of life can the civil law take the place of conscience or dictate norms concerning things which are outside its competence", which is that of ensuring the common good of people through the recognition and defence of their fundamental rights, and the promotion of peace and of public morality. The real purpose of civil law is to guarantee an ordered social coexistence in true justice, so that all may "lead a quiet and peaceable life, godly and respectful in every way" (1 Tim 2:2). Precisely for this reason, civil law must ensure that all members of society enjoy respect for certain fundamental rights which innately belong to the person, rights which every positive law must recognize and guarantee. First and fundamental among these is the inviolable right to life of every innocent human being. While public authority can sometimes choose not to put a stop to something which-were it prohibited- would cause more serious harm, it can never presume to legitimize as a right of individuals-even if they are the majority of the members of society-an offence against other persons caused by the disregard of so fundamental a right as the right to life. The legal toleration of abortion or of euthanasia can in no way claim to be based on respect for the conscience of others, precisely because society has the right and the duty to protect itself against the abuses which can occur in the name of conscience and under the pretext of freedom. In the Encyclical Pacem in Terris, John XXIII pointed out that "it is generally accepted today that the common good is best safeguarded when personal rights and duties are guaranteed. The chief concern of civil authorities must therefore be to ensure that these rights are recognized, respected, co-ordinated, defended and promoted, and that each individual is enabled to perform his duties more easily. For ?to safeguard the inviolable rights of the human person, and to facilitate the performance of his duties, is the principal duty of every public authority'. Thus any government which refused to recognize human rights or acted in violation of them, would not only fail in its duty; its decrees would be wholly lacking in binding force".