Almost all Americans see themselves as "middle class." To declare yourself middle class is to say you've succeeded without openly bragging that you're superior -- a no-no in a democratic culture. You're like everyone else, only a little more or less so. Not surprisingly, a recent poll done for the Economic Policy Institute, a liberal think tank, finds that only 2 percent of Americans put themselves in the "upper class" and a mere 8 percent consider themselves "lower class." The large majority classify themselves as "upper-middle class" (17 percent) or "middle class" (45 percent). The rest (27 percent) see themselves...