There are a lot of very religious scientists around. I think the problem here is that in our school systems, and to some degree - and this is where it is relevant - with school boards around the country that are mandating curriculums and textbooks, you start seeing this weird watering down of scientific fact so that our kids are growing up in an environment - and this connects to what I was saying earlier abou the media - where everything's contested. Where nothing is true.

The fact that there is a robust debate in Congress is good. The fact that the debate sometimes seems unanchored to facts is not so good.

My hope is that the president-elect [Donald Trump] coming in takes a similarly constructive approach, finding areas where we can cooperate with Russia, where our values and interests align. But that the president-elect also is willing to stand up to Russia where they are deviating from our values and international norms.

I have the authority to address the threat from Isil, but I believe we are strongest as a nation when the president and Congress work together. So I welcome congressional support for this effort in order to show the world that Americans are united in confronting this danger.

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.

There's no doubt that when it comes to our treatment of Native Americans as well as other persons of color in this country, we've got some very sad and difficult things to account for. I personally would want to see our tragic history, or the tragic elements of our history, acknowledged. I consistently believe that when it comes to whether it's Native Americans or African-American issues or reparations, the most important thing for the U.S. government to do is not just offer words, but offer deeds.

I said that America’s role would be limited; that we would not put ground troops into Libya; that we would focus our unique capabilities on the front end of the operation and that we would transfer responsibility to our allies and partners.