Since I've been in the Senate, is that my work with people like Tom Coburn on opening up transparency in government, making sure that every dollar the federal government spends that's out there - that that's all posted on a searchable database on the Internet.

We are running out of time

Climate change constitutes a serious threat to global security.

A man who took history in his hands, and bent the arc of the moral universe toward justice.

When I read history, I [see] what typically happens to presidents and the other party during tumultuous times and how people react when the economy is collapsing and they're losing their homes, losing their pensions - it sort of tracks, what ended up happening, because some of that is human nature.

I'm measuring my actions against that inner voice that for me at least is audible, is active, it tells me where I think I'm on track and where I think I'm off track.

I think Donald Trump is going to try as best he can to make sure that he delivers not only to the people who voted for him but for the people at large and the good thing is that there are going to be elections coming up so there's a built-in incentive for him to try to do that.