Do not live entirely isolated, having retreated into yourselves, as if you were already justified, but gather instead to seek the common good together. 25
Catechism number 1910
Each human community possesses a common good which permits it to be recognized as such; it is in the political community that its most complete realization is found. It is the role of the state to defend and promote the common good of civil society, its citizens, and intermediate bodies.