I just want to say this. I want to say it gently but I want to say it firmly: There is a tendency for the world to say to America, ‘the big problems of the world are yours, you go and sort them out,’ and then to worry when America wants to sort them out.

I think the center ground have got to become the people of change again and not the guardians of the status quo. And that is the weakness it comes to in our campaign. You can see it in your politics, you can see it everywhere.

There are people who are anxious about immigration for reasons that are perfectly sensible. They think it's uncontrolled. They think it's, therefore, arbitrary in its consequences, and there are some communities affected much more deeply than others.

Climate change is the world's greatest environmental challenge. It is now plain that the emission of greenhouse gases, associated with industrialization and economic growth...is causing global warming at a rate that is unsustainable.

Retreat might give us a moment of respite but years of repentance at our weakness would, I believe, follow.

Our task is not to fight old battles, but to show that there is a third way, a way of marrying together an open competitive society and successful economy with a just and decent society.

There is no way you're going to have an event like 9/11 and expect things to remain the same. They killed 3,000 people in New York on that day, and if they could have they would've killed 300,000.