I don't know what they teach in U.S. history classes today. But back in the middle of the last century, when I was in elementary school, there was absolutely no question about how we were to regard Abraham Lincoln. We were taught to feel a reverence bordering on awe for Honest Abe, the Great Emancipator, the eloquent martyr who saved the Republic. We were required to memorize the Gettysburg Address. And if we were lucky enough to join a field trip to our nation's capitol, one of the most significant events was our visit to the Lincoln Memorial. (A few...