There's an old adage about speakers: You won't remember what they said, but you'll never forget how they made you feel. Trump knows that in his bones. He gives his supporters - and they are growing - a terrific feeling of safety and security, along with a laugh and a smile.

There are some lawyers who think of themselves as basically instruments of whoever their clients are, and they pride themselves on their professional craft.

It can be easy and tempting, especially during a presidential campaign, to listen only to opinions that mirror and fortify one's own. That's not ideal, because it eliminates learning and makes it impossible for people to understand what they dismiss as 'the other side.'

Masterful politicians and effective agents of change tend to succeed by singling out and making salient some aspect of a nation's self-understanding, sparking a sense of recognition - and ultimately moving voters in their favor. Obama made it into an art form.