Trump is not somebody who`s fit to be president in any circumstances. I would feel deeply frustrated, not because anything he said about me, but because I would fear for the future of our country.

Sometimes slow, steady effort is rewarded with justice that arrives like a thunderbolt.

I do think that this whole area of cyber is something that at an international level we have to work on and develop frameworks and international norms so that we don't see a cyber arms race.

I hope we can all agree that, instead of continuing to subsidize yesterday's energy sources. We need to invest in tomorrow's.

We can't have special interests sitting shotgun. We gotta have middle class families up in front. We don't mind the Republicans joining us. They can come for the ride, but they gotta sit in back.

What we can do is make sure that Afghanistan is not a safe haven for Al Qaeda. What we can do it make sure that it is not destabilizing neighboring Pakistan, which has nuclear weapons. The key is we’ve got to have a clear objective...

Increasing America’s debt weakens us domestically and internationally. Leadership means that 'the buck stops here.' Instead, Washington is shifting the burden of bad choices today onto the backs of our children and grandchildren. America has a debt problem and a failure of leadership.