I worry very, very much about an isolated country. That's what makes me nervous. Russia lives in the world. China lives in the world. North Korea is a very, very strange country because it is so isolated, and I do feel that a nation with nuclear weapons, they have got to be dealt with. Dealt with effectively.

Here's what income and wealth inequality is about. Last year, the top 25 hedge fund managers made more than 24 billion, enough to pay the salaries of 425,000 public school teachers. This level of inequality is neither moral or sustainable

In the 1980s and 1990s, Jack Welch, the CEO of General Electric, laid off over 100,000 employees. His reward? When he retired from GE, he received a golden parachute of over $400 million dollars. This is the kind of corporate greed and irresponsibility that is destroying the middle class and must be ended.

Real change never occurs from the top on down, [but] always from the bottom on up.

It is a dictatorship. They did have a good health - do have a decent health care system and a decent educational system. A lot of people have left Cuba for better dreams, to fulfill their aspirations.

People have a right to give a speech. And people have a right to protest. But I'm not a great fan of disrupting people's speeches.

If we greatly expanded primary health care, lower the cost of prescription drugs, we take a giant step forward in lowering health care costs in America.