Liel Leibovitz sizes up Santorum and Romney along rhetorical lines:
What we want is a decently intelligent president with one solid idea. Or, to borrow Isaiah Berlin’s well-known distinction, what we want is not a fox but a hedgehog. … This is why someone like Santorum resonates much better than someone like Mitt Romney: Beyond his wealth and his android-like lack of social grace, Romney is a fox through and through, a politician who takes pride in attacking issues individually and logically. That’s a great approach for a venture capitalist, a governor, a law professor. It’s a terrible approach for a president. Great presidents tend to be hedgehogs.
Drezner recently used the same analogy to assess Ron Paul's appeal:
Paul is a hedgehog. He knows One Big Thing and uses it to construct his worldview. We know from Philip Tetlock that hedgehogs are less likely to be right when making predictions than foxes — those people who know a little about a lot of things. Hedgehogs outperform foxes is in getting big macro-consequential events correct, however. We tend to ignore such predictions, however, because hedgehogs usually lack the emotional intelligence necessary to persuade nonbelievers. I want Paul banging on about the dangers of excessive government intrusion and overexpansion. That's not nothing. Here's the thing, though — precisely because Paul is a hedgehog, he brings other less-than-desirable qualities to the table.
Earlier discussion of hedgehogs and foxes here.
(Photo via Buzzfeed)