I continue to be struck by the constancy of Barack Obama. His tactics shift and weave, but his overall principles and project are firmly rooted. In the State of the Union address, he revealed his core convictions, explained his policies and their consequences, and linked his accomplishments with his promises.

Obama is a centrist, working to define common sense, working to move the center left, as I have earlier argued. In his speech last night, he focused on fairness and the viability of the American dream. He argued for the way the government can support economic development and the interests of the vast majority of the American public. Though he did not use the language of Occupy Wall Street, his focus on fairness was clearly supported by the fruits of the social movement’s labors. And the principled debate before the American people in the coming election was illuminated, as Obama argued for his side: a “smarter more effective government” versus limited government, the Republican ideal.

The speech was elegantly crafted and delivered, something that is now expected from Obama and therefore doesn’t impress and is not really news. But the fine form delivered a well rounded argument.

He opened and closed with a call for common purpose, exemplified by the military and its virtues, as he highlighted major milestones in foreign affairs: the end of the war in Iraq and the killing of Osama Bin Laden. A move that makes me uncomfortable, though I understand that it works well.

The opening:

“Last month, I went to Andrews Air Force Base and welcomed home some of our last troops to serve in Iraq. Together, we offered a final, proud salute to the colors under which more than a million of our fellow citizens fought — and several thousand gave their lives.

We gather tonight knowing that this generation of heroes has made the United States safer and more respected around the world. (Applause.) For the first . . .

Read more: The State of the Union: Opening the Debate of 2012