One thing you learn in this job [being US President] is that even if something's not your fault, you're still responsible. And that's how it should be.
Let me start off by saying that in 2000 I said, 'Vote for me. I'm an agent of change.' In 2004, I said, 'I'm not interested in change - I want to continue as president.' Every candidate has got to say 'change.' That's what the American people expect.
We spend less time with each other now than we did during the presidency. When you're president, you're usually out and back in the same day - at least I was. I just came from a trip to the Middle East last week, where I was gone for five nights, and when I left, Laura [Bush] was out of town.
One of the things I learned as president is that your life is just not going to unfold the way you want it to. There will be surprises, challenges, and therefore the question is how you deal with the unexpected.