Today's possibilities are not tomorrows guarantees.

I regret to say that my hand did, in fact, have an improper relationship with Chelsea Clinton. The incident represents a profound lapse of judgment for which my hand takes sole responsibility.

Our military superiority is so great - it's far greater than it was in the Gulf War, and the Gulf War was over in 100 hours after we bombed for 43 days. And so now they can bomb for a couple of days and then just roll into Baghdad... The odds are there's going to be a war and it's going to be not for very long.

My father left me with the feeling that I had to live for two people, and that if I did it well enough, somehow I could make up for the life he should have had. And his memory infused me, at a younger age than most, with a sense of my own mortality. The knowledge that I, too, could die young drove me both to try to drain the most out of every moment of life and to get on with the next big challenge. Even when I wasn't sure where I was going, I was always in a hurry.

. . . unfortunately, we can't control the actions of everyone.

The most profound security threat we face today is global warming....climate change has the capacity to change the way all of us live.

Music can give you your dreams. It will teach you hard work, it will break your heart and make you so happy, you can't stand it. . . .I don't think I'd have been president if it hadn't been for music.