Of course, it’s also easy to imagine a scenario in which he is not an island of rationality in a sea of tumult, but simply an island. New presidents are often amazed by how much they are disobeyed, by how often passive-aggressiveness frustrates their plans.

It could be that Obama will be an observer, not a leader. Rather than throwing himself passionately into his causes, he will stand back. Congressional leaders, put off by his supposed intellectual superiority, will just go their own way. Lost in his own nuance, he will be passive and ineffectual. Lack of passion will produce lack of courage. The Obama greatness will give way to the Obama anti-climax.