I don't have much patience for anyone who denies that this challenge is real.

I know that there are those who disagree with the overwhelming scientific evidence on climate change. But here's the thing -- even if you doubt the evidence, providing incentives for energy-efficien cy and clean energy are the right thing to do for our future -- because the nation that leads the clean energy economy will be the nation that leads the global economy. And America must be that nation.

I have no patience with people who go around blowing up innocent people.

For me, Lincoln is like just a handful of people - a Gandhi, or a Picasso, or a Martin Luther King Jr. - who is an original and captures something essential.

If you have health care, my plan will lower your premiums. If you don't, you'll be able to get the same kind of coverage that members of Congress give themselves.

We learn from our mistakes, we do some reflection, we lick our wounds, we brush ourselves off - then we go forward, with the presumption of good faith in our fellow citizens.

Now is the time to keep the promise of equal pay for an equal day's work, because I want my daughters to have exactly the same opportunities as your sons.