25 With regard to civil authority, Leo XIII, boldly breaking through the confines imposed by Liberalism, fearlessly taught that government must not be thought a mere guardian of law and of good order, but rather must put forth every effort so that "through the entire scheme of laws and institutions . . . both public and individual well-being may develop spontaneously out of the very structure and administration of the State." Just freedom of action must, of course, be left both to individual citizens and to families, yet only on condition that the common good be preserved and wrong to any individual be abolished. The function of the rulers of the State, moreover, is to watch over the community and its parts; but in protecting private individuals in their rights, chief consideration ought to be given to the weak and the poor. "For the nation, as it were, of the rich is guarded by its own defenses and is in less need of governmental protection, whereas the suffering multitude, without the means to protect itself relies especially on the protection of the State. Wherefore, since wageworkers are numbered among the great mass of the needy, the State must include them under its special care and foresight."
Source: Quadragesimo Anno (Vatican.va)