I can't be smug, because I know that you can lose anything at any point. And I can't be angry, because I haven't lost it.

There are no moments you have frozen in amber. It's moving, it's changing, so appreciate what's good about right now and be ready for what's next.

'Why do you think it is...', I asked Dr. Cook ... 'that brain surgery, above all else-even rocket science-gets singled out as the most challenging of human feats, the one demanding the utmost of human intelligence?' [Dr. Cook answered,] 'No margin for error.'

I think the scariest person in the world is the person with no sense of humor.

[Constant curiousity leads to happiness:] I wake up curious every day and every day I'm surprised by something. And if I can just recognize that surprise every day and say, 'Oh, that's a new thing, that's a new gift that I got today that I didn't even know about yesterday,' it keeps me going. It keeps me more than going. It keeps me enthusiastic and grateful!

I can't always control my body the way I want to, and I can't control when I feel good or when I don't. I can control how clear my mind is. And I can control how willing I am to step up if somebody needs me.

When I was younger, I was always described as happy-go-lucky. Then I drank and I partied - did all that stuff that might tell you maybe there was a little bit of untruth in that [description]. Now, the surprising thing is that when I say stuff, I actually mean it. I don't have to do the work of trying to formulate my point of view. It just is. And it's surprising how much I love life. I just really have a good time.