no vicarious charity can substitute for justice which is due as an obligation and is wrongfully denied. -Quadragesimo Anno 137

Love for others, and especially for the poor, is made concrete by promoting justice.
-Centesimus Annus 58.

"I cannot “give” what is mine to the other, without first giving him what pertains to him in justice. If we love others with charity, then first of all we are just towards them...

Not only is justice not extraneous to charity, not only is it not an alternative or parallel path to charity: justice is inseparable from charity, and intrinsic to it."
-Caritas in Veritate 6

"It is not from your own possessions that you are bestowing aims on the poor, you are but restoring to them what is theirs by right. For what was given to everyone for the use of all, you have taken for your exclusive use...

The earth belongs not to the rich, but to everyone. Thus, far from giving lavishly, you are but paying part of your debt."
-St. Ambrose of Milan

“Private Property, in fact, is under a social mortgage, which means that it has an intrinsically social function, based upon and justified precisely by the principle of the universal destination of goods” - Sollicitudo Rei Socialis 42

“If certain landed estates impede the general prosperity because they are extensive, unused, or poorly used, or because they bring hardship to peoples or are detrimental to the interest of the country, the common good sometimes demand their expropriation” -Populorum Progressio 24

"Let us imagine things as happening in this way: All give all that they have into a common fund. No one would have to concern himself about it, neither the rich nor the poor...Will we not make a heaven on earth? - St. John Chrysostom

"Tell me, then, how did you become rich?...can you, ascending through many generations, show the acquisition just? It cannot be. The root and origin of it must have been injustice."
-St. John Chrysostom

look I did a whole thread on this and didn't even quote Basil once