"What is a Person?"

My friend and colleague, rock-star sociologist Christian Smith, just won a fancy award (the "2010 Cheryl Frank Memorial Prize from the International Association for Critical Realism") for his book, What is a Person?: Rethinking Humanity, Social Life, and the Moral Good from the Person Up (University of Chicago Press).  Not too many questions sit closer, it seems to me, to the core of the Catholic Legal Theory project than does the one posed by Chris's title.