I'm not sure which societies he admires. Moreover, I'm not sure how much post-revolution France (just an example) is a child of Christianity. Pagan cultures have more than chipped in as well.
I think it's best to just focus on the natural law angle without looking for the Christian patrimony. A lot of the folks looking will probably ascribe all the negative stuff to that side of the ledger anyway and ignore all the positives. As has already been done in this thread.