Unlike Washington, which is stuck in ideological gridlock, Americans feel the impact of climate change in their own hometowns and they know something must be done.

No one is going to question my commitment to the defence of our nation. I don't know what it is these Republicans, who didn't serve in any war, have against those of us who are Democrats who did.

I am sympathetic to developing countries’ concerns: because of our emissions it’s their crops that will disappear; because of our inaction, it’s their fields that turn to desert...

I can tell you, Massachusetts, fastest growing sector of our economy is clean energy and energy efficiency companies. And they're growing faster than any other sector.

If you don't believe ... Saddam Hussein is a threat with nuclear weapons, then you shouldn't vote for me.

Jesus did not help just the sick who could afford to pay for it.

That is what Americans do. We face a challenge - no matter how great - because we know that on the other side there is always hope.