But over the past few decades, people have lost a sense of their own sinfulness. Children are raised amid a chorus of applause. Politics has become less about institutional restraint and more about giving voters whatever they want at that second. Joe DiMaggio didn’t ostentatiously admire his own home runs, but now athletes routinely celebrate themselves as part of the self-branding process…

Beneath all the other things that have contributed to polarization and the loss of civility, the most important is this: The roots of modesty