I've come to embrace the notion that I haven't done enough in my life. I've come to confirm that one's title, even a title like president of the United States, says very little about how well one's life has been led. No matter how much you've done or how successful you've been, there's always more to do, always more to learn, and always more to achieve.

Iran has to live up to its international obligations. . . . The president has said that our patience is not unlimited.

But we reject the belief that America must choose between caring for the generation that built this country and investing in the generation that will build its future.

No country can hide from the dangers of carbon pollution

At least Romney and McCain, they respect the rule of law. At least Romney and McCain, they understand their limitations.

I am living testimony to the moral force of non-violence. I know there's nothing weak - nothing passive - nothing naïve - in the creed and lives of Gandhi and King.

This Administration also puts forward a false choice between the liberties we cherish and the security we demand... That means no more illegal wire-tapping of American citizens. No more national security letters to spy on citizens who are not suspected of a crime. No more tracking citizens who do nothing more than protest a misguided war. No more ignoring the law when it is inconvenient. That is not who we are.