I can get sad, I can get frustrated, I can get scared, but I never get depressed - because there's joy in my life.

To be brutally honest, for much of that time, I was the only person in the world with Parkinson's. Of course, I mean that in the abstract. I had become acutely aware of people around me who appears to have the symptoms of Parkinson's disease, but as long as they didn't identify with me, I was in no rush to identify with them. My situation allowed, if not complete denial, at least a thick padding of insulation.

'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.'

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.

If you were to rush into this room right now and announce that you had struck a deal - with God, Allah, Buddha, Christ, Krishna, Bill Gates, whomever - in which the ten years since my diagnosis could be magically taken away, traded in for ten more years as the person I was before - I would, without a moment's hesitation, tell you to take a hike.

I'm kind of private and I keep things inside a lot, but it's been so wonderful to realize that people care about you in a very deep way and that there is some bond between an actor and his audience. I don't even know how to describe that feeling.

But the key to our marriage is the capacity to give each other a break. And to realize that it's not how our similarities work together; it's how our differences work together.