After some thought, it seems that justice is grounded in rights, and rights are grounded in worth and respect for worth. This, I think, gives the best grounding for rights. I also think that the Judeo-Christian tradition gives the best account of human worth – but I am interested in hearing from those who do not agree on this matter.
Questions to consider: If rights are not grounded in worth, what are they grounded in? Is there a better account of human worth than the Judeo-Christian tradition?