Two of my favorite political philosophers, Mao Zedong and Mother Teresa, not often coupled with each other, but the two people that I turn to most.

Trump is, to some extent, redefining what we think of as polarization in this country. Where polarization has been seen as ideological, it is now being seen almost as behavioral.

Once again, the vice president has acknowledged that he dares to follow where Bill Bradley has boldly led. ... The only consistency in Al Gore's positions is that he has consistently been less willing to lead with bold proposals of his own, but consistently followed in the footsteps of other leaders.

Figure out how to do things that have never been done before.

I think, you know, we always tell candidates, show, don`t tell, what you`re all about. I think Hillary Clinton's speech was an important speech that people are going to look at and they`re going to see not just the attacks on Donald Trump, but also her admission that maybe she`d been part of the polarization problem as well and she could do better.