Of course, it comes from Charles P. Pierce:

When you come right down to the bottom of the chafing dish, Thanksgiving is a holiday of great ambivalence. A day allegedly dedicated to thanking the great Whoever that enough white people survived the winter in Plymouth to kick off 300-odd years of continent-wide genocide. A day dedicated to celebrating the simple gifts that the great Whoever bestowed upon this land, yet one that we mark by going crazy over cheap, Chinese-slave-labor produced crap at 12:01 a.m. the very next morning. Also, too: the Detroit Lions. Sometimes, America is a very tough room.

What I choose to celebrate this year, however, is how, in the face of our own internal contradictions, and our own internal hypocrisies, and our own eternal ability to bullshit ourselves into believing almost anything, we retain the indomitable notion that, somehow, we can get things right. You can call this optimism, or you can call this delusional, and I wouldn’t disagree with either one. I know, it sounds sappy, but I really believe that, buried beneath all the nonsense and avarice and plain meanness with which we too often manifest our politics, there is a feeling of a political commonwealth that is worth getting back to and, having arrived there, worth preserving. I believe that is the case with the people I watched wait five hours to vote, arranging the events in their daily lives so that they could stay there in the face of brutish bureaucratic inertia. I believe that is the case with the people who believe that Agenda 21 is a UN plot to steal all our golfs. We believe nonsense in America, and we occasionally act on it, which is infinitely worse, and we occasionally believe that there can be no consequences to believing nonsense, and that is the worst thing of all. But there is something tiny and hopeful beneath all of our credulity, and our shouting at each other. And that is our stubborn optimism about our ability to fix things about ourselves, and about our poor, benighted relatives who don’t believe what we do, but would, if only they would put down the damn cranberry sauce and listen…for…a..minute. I believe that is true of all of us who are spending Thanksgiving celebrating the fact that the country did not hand itself over to Willard Romney, and I believe it is true of those people who are spending it pondering seriously the idea that all the country really needs to come back into the light of grace is Sarah Palin in the White House.