Pacem in Terris §63

⁶³ In addition, heads of States must make a positive contribution to the creation of an overall climate in which the individual can both safeguard his own rights and fulfill his duties, and can do so readily. For if there is one thing we have learned in the school of experience, it is surely this: that, in the modern world especially, political, economic and cultural inequities among citizens become more and more widespread when public authorities fail to take appropriate action in these spheres. And the consequence is that human rights and duties are thus rendered totally ineffective.