We've just been sort of spinning our wheels for such a long time, for decades really, with each new president being considered illegitimate by the other side. That's been the case ever since Bill Clinton. And it's a - you can't keep frittering away your political capital that way and expect there not to be some long-term rot that sets in.

When Donald Trump in one speech said I love the poorly educated - which was a remarkable thing to say - he was saying those are my people.

Gingrich was a far more volatile and aggressive individual than Boehner, but the institutional norms of self-restraint, and perhaps even self-interest, have broken down under the pressure of an increasingly abnormal Republican Party.

I think it's important for Americans to try to understand each other a little better.

I will find any excuse to go into somebody's study or ask them what they are reading. I can't think of too many other things that say what goes on in someone's head than the books they have.

We all have a dark side but we keep it in its place because it's destructive. And Donald Trump has said, no, no, bring it out because that's the energy we need in order to reverse all these horrible things that have been happening in America.

The ranks of educated professional swelled as more Americans went to college and more Americans sort of adopted a more cosmopolitan lifestyle and worldview. And as the Democrats were looking for an alternative to the unions who no longer seemed like a large enough base for the party, they found the educated who veered more toward a progressive cultural outlook, who may have had - may have been working in the financial sector, in entertainment, in media, in universities. That became really the rank and file of the Democratic Party over a long period of time.