I mean, I enjoy my work as an actor. But to make a difference in people's lives through advocacy and through supporting research - that's the kind of privilege that few people will get, and it's certainly bigger than being on TV every Thursday for half an hour.

The moment I understood this - that my Parkinson's was the one thing I wasn't going to change - I started looking at the things I could change, like the way research is funded.

Discipline is just doing the same thing the right way whether anyone's watching or not.

I was eccentric, even as a kid. I was an early reader, an early talker. I was very curious in a way that maybe the other kids weren't. I was a little more outgoing.

I definitely believe in a higher power.

The purpose that you wish to find in life, like a cure you seek, is not going to fall from the sky. ...I believe purpose is something for which one is responsible; it's not just divinely assigned.

I had all the usual ambition growing up. I wanted to be a writer, a musician, a hockey player. I wanted to do something that wasn't nine to five. Acting was the first thing I tried that clicked.