So what I say about Tracy is this: Tracy's big challenge is not having a Parkinson's patient for a husband. It's having me for a husband. I happen to be a Parkinson's patient.

I truly believe that we have infinite levels of power that we don't even know are available to us.

I remember my son wanted to go to bed with his cowboy boots on, and we had this fight for like an hour. Then I realized that the only good reason I had for him not to do it is because I didn't want him to. There was really no other reason. And finally I said, "OK, fine." It was a great victory for me, because I realized it doesn't really matter.

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

My age makes me think how valuable life is. How bad is something like Parkinson's in relation to not having life at all?

Certainly people have a lot tougher situations than I've had to deal with. But I will say we are all dying from the moment we are born. This is not just rehearsal.

Life is the power that's greater than I can ever comprehend.