Liberals are concerned about the concentration of wealth because it almost inevitably leads to a concentration of power that undermines democracy.

Today, for good or ill, people are thinking about many social problems from the standpoint of their own kitchen tables. I think the way to begin a conversation with people about what's going on is to address their daily experiences, and what their fears and frustrations, as well as their exhilarations, are.

To be a skilled politician, you have to be genuine. To really make it work, you have to love people. You have to love the contact, you have to love the energy, you've gotta love inspiring people and getting their adulation in return. You can't separate what's genuine from what is necessary.

I think the big problem is you have a vicious cycle of wealth and power in America that`s just gotten completely out of control and you`ve seen it in politics.

A leader is someone who steps back from the entire system and tries to build a more collaborative, more innovative system that will work over the long term.

You and I and almost all Americans are beneficiaries of the new economy. But we are also losing parts of our lives to the new economy - aspects of our family lives, our friendships, our communities, ourselves.

I was there in Washington in the `90s. It was pretty bad then. It`s much worse now [in 2015]. And that vicious cycle is you`ve got again big corporations, executives, Wall Street, very wealthy individuals in both parties who are calling the shots.