It’s easy for Thanksgiving to boil down to little more than turkey, football and travel delays, but many Americans strive to make it more meaningful. They try to take the focus off of our problems and to reflect on our many blessings. As well they should. Consider the example set by Abraham Lincoln. Our 16th president was in the middle of a bloody and protracted civil war when he issued his Thanksgiving Proclamation. “The year that is drawing toward its close has been filled with the blessings of fruitful fields and healthful skies,” it began. And frankly, we should be...