I read that quote this morning [the paragraph before that: "William Martin, a professor at Rice University who studies religious conservatives, has questioned the compassion of Perry’s health-care and socioeconomic record."]
More on Professor Martin and is study of religious conservatives:
Martin has become a "go-to" quote guy for Mediots bashing Perry. I think he's tied to the James A. Baker III Institute at Rice. (Reflecting, perhaps, Poppy Bush's dislike of trailer-park Republicans and crossovers like Perry.)