I am not particularly nostalgic for the Bush era either. But Obama’s Reinhold Niebuhr act comes with potential costs of its own. While the last president exuded a cowboyish certainty, this president is constantly examining his conscience in public — but if their policies are basically the same, the latter is no less of a performance. And there are ways in which it may be a more fundamentally dishonest one, because it perpetually promises harmonies that can’t be achieved and policy shifts that won’t actually be delivered.