Climate change is real. The science is compelling. And the longer we wait, the harder the problem will be to solve.

You can't have responsibility and you can't have us living up to our ideals unless it's based on a fairly common acceptance of truth, of what is true - what is the truth here?

I mean, all of these things that [Bashar Assad] has done, there's no way even if President Obama wanted to just play along that you could actually achieve peace, because there are 65 million Sunni in between Baghdad and the border of Turkey, Syria, and Iraq, who will never, ever again accept Assad as a member - as a legitimate leader.

We are a nation of laws and liberties, not of a knock in the night. So it is time to end the era of John Ashcroft. That starts with replacing the Patriot Act with a new law that protects our people and our liberties at the same time.

We can't change minds without knowing what's in them.

I have confidence in my campaign. I have assembled a great team that is going to beat George W. Bush, and any rumors to the contrary are completely erroneous.

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.