Well, I read the article, and I still don't have a clue what this "common good" doctrine that this professor espouses actually is. Just lots of tangential verbage and people yelling at it and bits and pieces about what might have influenced it and so on. But if I had to write a short essay explaining it I would fail utterly. Somehow this doesn't surprise me, as Harvard is full of idiots these days who think creating word salads counts as having an intellect.
Basically, he’s an integralist.