http://theologica.blogspot.com/
At first blush, this classic formulation . . . of the purposes and powers of government seems to accord public authority vast and sweeping powers. Yet, in truth, the general welfare (or common good) requires that government be limited. Although government's responsibility is primary in respect of defending the nation from attack and subversions, protecting people from physical assaults and various other forms of depredation, and maintaining public order, its role is otherwise subsidiary: to support the work of the families, religious communities, and other institutions of civil society that shoulder the primary burden of forming upright and decent citizens, caring for those in need, encouraging people to meet their responsibilities to one another, and discouraging them from harming themselves or others.