There is nothing wrong with our country, there is something wrong with our politics...When this country is operating off a common ground, nobody can stop us. But when we're divided, then we end up having a whole lot of self-inflicted problems.

We have to be successful at the cutting-edge industries of the future like Twitter. But we also have always been a country that makes stuff.

Donald Trump is like Hillary Clinton said, a man you can bait with a tweet is not a man you can trust with nuclear weapons. You can`t do it.

The most powerful political moments for me come when I feel like my actions are aligned with a certain truth. I can feel it. When I'm talking to a group and I'm saying something truthful, I can feel a power that comes out of those statements that is different than when I'm just being glib or clever.

Certainly I've appreciated Angela Merkel as a partner.

It's a generational project just to get America to live up fully to its ideals and to have the kind of society where everybody has a shot, and every kid is getting a good education, and people are getting living wages, and they have decent retirement.

The science [of global warming] is beyond dispute... Delay is no longer an option. Denial is no longer an acceptable response