Amy Stuart in her reply to my response to President Obama’s speech on the deficit pointed out the need to clarify what the political left, right and center mean. I think she’s right. The terms have been used loosely and quite imprecisely. But on the other hand, their continued use suggests that there may be good reasons for the continued use of the schema.

I, myself, became convinced, after the fall of the Soviet Union, that the terms left and right were obsolete. I thought (it turns out incorrectly) that since it was becoming clear to just about everyone that there was no systemic alternative to capitalism, to the modern market economy, and since there really were simply alternative capitalisms, that we might best abandon the terms. Then we would pragmatically address the practical problems of the day, and express, identify and pursue various specific political commitments, e.g. individual freedom and social justice, and not put them in the large baskets of the left and the right. I thought that the terms hid more than they revealed, that it was too hard to find and consider specific commitments in these very large bins.

Yet, given the systematic polarization of our political world, I am convinced that I was wrong. These old categories still have life, helping illuminate distinctions and commonalities in the political landscape. And there is an additional benefit as it applies to the present American scene. The distinction between left, right and center provides a way to understand the creative political action of Barack Obama, who in this regard is a leader.

The notion of the political left and right has a history, dating back to the French Revolution: Monarchists, right; revolutionaries, left. It was used to understand the Manichean battles of the Twentieth Century: Communists and their sympathizers, left; Fascists and their sympathizers, right. And it also has been used to understand ordinary domestic politics: Republicans, right; Democrats, left, very conservative Republicans, far right, very progressive Democrats, far left (though I think this is a small group at best).

The notion of center is less sharp. Vaguely, it . . .

Read more: Left, Right and the Creative Center: Understanding the Political Landscape in the Age of Obama