During the sole argument we had when [Chelsea] was in high school, the subject of which I don't even remember, I looked at her and said, 'As long as you're in this house, being president is my second most important job'.

No problem of human making is too great to be overcome by human ingenuity, human energy, and the untiring hope of the human spirit.

We are here to celebrate the completion of the first survey of the entire human genome. Without a doubt, this is the most important, most wondrous map ever produced by human kind.

Supporters of capital punishment bear a special responsibility to ensure the fairness of this irreversible punishment.

The secret to living a full life with no regrets and to staying young is to figure out what you believe in and fight for it. If you lose, don't give up. If you win, raise the bar, and then rare back and do something else. And remember that, with the accumulation of years, our responsibilities to the future grow greater, not less.

When we got organized as a country and we wrote a fairly radical Constitution with a radical Bill of Rights, giving a radical amount of individual freedom to Americans, it was assumed that the Americans who had that freedom would use it responsibly.

Life is a journey towards truth, we have something to learn from each other, and everybody ought to have a chance to make the journey. So for us, a community is just made up of anybody who accepts the rules of the game, everybody counts, everybody has a role to play, everybody deserves a chance and we all do better when we work together