To marry unequally is to suffer equally.
Communism was a great system for making people equally poor - in fact, there was no better system in the world for that than communism. Capitalism made people unequally rich.
The idea of social justice is that the state should treat different people unequally in order to make them equal
Before, you think of it as a permanent bond of happiness; later, you see that it is a yoke, borne unequally. You marry to keep love, but sometimes that is the surest way to lose it.
Injustice results as much from treating unequals equally as from treating equals unequally.
Nature distributes her favors unequally.