You've got problems in Central Asia. And you've got problems within our own communities back home. So if we end up saying, look, this has nothing to do with Islam or it's got no connection with that broader question, then we look, frankly, as if we're in denial about the problem. And the interesting thing in the Middle East is that they have absolutely no problem there in identifying that as Islamist extremism and calling it that.

The kaleidoscope has been shaken. The pieces are in flux. Soon they will settle again. Before they do, let us re-order this world around us.

We have a situation where we are rich really as a world overall, and yet we have the capacity to destroy ourselves, either through nuclear weapons or through environmental degradation, and we allow the life chances of hundreds of millions of people to be destroyed because we haven't found the will to tackle it

We are going to expand enormously -- our economy, our consumption, over the years to come ... But the consequences of that on emissions are going to be severe unless we change direction.

The first rule in politics is that there are no rules, at least not in the sense of inevitable defeats or inevitable victories. If you have the right policy and the right strategy, you always have a chance of winning. Without them, you can lose no matter how certain the victory seems.

Climate change is probably the greatest long-term challenge facing the human race.

Your loss we count as our loss. Your struggle we take as our struggle.