“What I think Krugman got intuitively is that liberals understand politics as a policy argument,” says Ezra Klein, now a Washington Post columnist and then an influential political blogger. “On the right, there’s something of a cultural underlay to the worldview: We are the real Americans, and they are not. Liberals want to say, We are correct on the evidence, and they are not.”

From an insightful profile of Paul Krugman in New York magazine.