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The teaching of the Church has elaborated the principle of subsidiarity, according to which “a community of a higher order should not interfere in the internal life of a community of a lower order, depriving the latter of its functions, but rather should support it in case of need and help to co-ordinate its activity with the activities of the rest of society, always with a view to the common good” (CA, n. 48; cf. QA, nn. 184—186). God has not willed to reserve to himself all exercise of power. He entrusts to every creature the functions it is capable of performing, according to the capacities of its own nature. This mode of governance ought to be followed in social life. The way God acts in governing the world, which bears witness to such great regard for human freedom, should inspire the wisdom of those who govern human communities. They should behave as ministers of divine providence. The principle of subsidiarity is opposed to all forms of collectivism. It sets limits for state intervention. It aims at harmonizing the relationships between individuals and societies. It tends toward the establishment of true international order.
- Catechism of the Catholic Church, 1994, nn. 1883-1885.

In contrast, from the Christian vision of the human person there necessarily follows a correct picture of society. According to Rerum Novarum and the whole social doctrine of the Church, the social nature of man is not completely fulfilled in the State, but is realized in various intermediary groups, beginning with the family and including economic, social, political and cultural groups which stem from human nature itself and have their own autonomy, always with a view to the common good. This is what I have called the “subjectivity” of society which, together with the subjectivity of the individual, was cancelled out by “Real Socialism” (SRS, nn. 15, 28).
- John Paul II, Encyclical Letter Centesimus Annus, May 1, 1991, n. 13.

It is in full accord with human nature that juridical—political structures should, with ever better success and without any discrimination, afford all their citizens the chance to participate freely and actively in establishing the constitutional bases of a political community, governing the state, determining the scope and purpose of various institutions, and choosing leaders.... Authorities must beware of hindering family, social, or cultural groups, as well as intermediate bodies and institutions. They must not deprive them of their own lawful and effective activity, but should rather strive to promote them willingly and in an orderly fashion. For their part, citizens both as individuals and in association should be on guard against granting government too much authority and inappropriately seeking from it excessive conveniences and advantages, with a consequent weakening of the sense of responsibility on the part of individuals, families, and social groups.
- Vatican Council II, Pastoral Constitution on the Church in the Modern World ( Gaudium et Spes), December 7, 1965, n. 75.

[I]n exceptional circumstances the State can also exercise a substitute function, when sectors or business systems are too weak or are just getting under way, and are not equal to the task at hand. Such supplementary interventions, which are justified by urgent reasons touching the common good, must be as brief as possible, so as to avoid removing permanently from society and business systems the functions which are properly theirs, and so as to avoid enlarging excessively the sphere of State intervention to the detriment of both economic and civil freedom. In recent years the range of such intervention has vastly expanded, to the point of creating a new type of state, the so-called ‘Welfare State.’ This has happened in some countries in order to respond better to many needs and demands, by remedying forms of poverty and deprivation unworthy of the human person. However, excesses and abuses, especially in recent years, have provoked very harsh criticisms of the Welfare State, dubbed the ‘Social Assistance State.’ Malfunctions and defects in the Social Assistance State are the result of an inadequate understanding of the tasks proper to the State. Here again the principle of subsidiarity must be respected: a community of a higher order should not interfere in the internal life of a community of a lower order, depriving the latter of its functions, but rather should support it in case of need and help to coordinate its activity with the activities of the rest of society, always with a view to the common good. By intervening directly and depriving society of its responsibility, the Social Assistance State leads to a loss of human energies and an inordinate increase of public agencies, which are dominated more by bureaucratic ways of thinking than by concern for serving their clients, and which are accompanied by an enormous increase in spending. In fact, it would appear that needs are best understood and satisfied by people who are closest to them and who act as neighbors to those in need. It should be added that certain kinds of demands often call for a response which is not simply material but which is capable of perceiving the deeper human need. One thinks of the condition of refugees, immigrants, the elderly, the sick, and all those in circumstances which call for assistance, such as drug abusers: all these people can be helped effectively only by those who offer them genuine fraternal support, in addition to the necessary care.
- John Paul II, Encyclical Letter Centesimus Annus, May 1, 1991, n. 48.

And yet many today go so far as to condemn the Church as the ancient pagans once did, for such outstanding charity, and would substitute in lieu thereof a system of benevolence established by the laws of the State. But no human devices can ever be found to supplant Christian charity, which gives itself entirely for the benefit of others. This virtue belongs to the Church alone, for, unless it is derived from the Most Sacred Heart of Jesus, it is in no wise a virtue; and whosoever departs from the Church wanders far from Christ.
- Leo XIII, Encyclical Letter Rerum Novarum (On the Conditions of the Workers), May 15, 1891, n. 30.

If Pope Leo XIII calls upon the State to remedy the condition of the poor in accordance with justice, he does so because of his timely awareness that the state has the duty of watching over thecommon good and of ensuring that every sector of social life, not excluding the economic one, contributes to achieving that good, while respecting the rightful autonomy of each sector. This should not, however, lead us to think that Pope Leo expected the state to solve every soci al problem. On the contrary, he frequently insists on necessary limits to the State’s intervention and on its instrumental character, inasmuch as the State exists in order to protect their rights and not stifle them.
- John Paul II, Encyclical Letter Centesimus Annus, May 1, 1991, n. 11.