John Kerry: “To this day I have serious doubts that Lee Harvey Oswald acted alone.”

We are competing, but everybody has their own approach, which is one of the exciting things here.

It's a matter of mathematics and physics, not politics, not ideology. It is a response to the science.

I think I am pursuing common sense for political right, political left, republican, democrat.

We do not trade any component of any of those other issues for what we are trying to do on the climate front.