Look, first of all, the climate is changing. I don't think the science is clear what percentage is man-made and what percentage is natural. It's convoluted. And for the people to say the science is decided on, this is just really arrogant, to be honest with you, it's this intellectual arrogance that now you can't even have a conversation about it. The climate is changing, and we need to adapt to that reality.

I've said consistently that I always reserve the right, in conjunction with a broader international effort, to prevent genocide or any wholesale slaughter than might happen inside of Iraq or anyplace else.

We seem to have trouble with [critical thinking]. And our political system doesn't help.

This Administration also puts forward a false choice between the liberties we cherish and the security we demand... That means no more illegal wire-tapping of American citizens. No more national security letters to spy on citizens who are not suspected of a crime. No more tracking citizens who do nothing more than protest a misguided war. No more ignoring the law when it is inconvenient. That is not who we are.

I think same sex couples should be able to get married.

This counter-terrorism campaign will be waged through a steady, relentless effort to take out Isil wherever they exist, using our air power and our support for partner forces on the ground. This strategy of taking out terrorists who threaten us, while supporting partners on the front lines, is one that we have successfully pursued in Yemen and Somalia for years.

History doesn't always move in a straight line. Sometimes it zigs and zags.