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.

So I never spend a lot of time analyzing why people respond to my work. But I think that it's just the joy, a passion for life, that I think has always been in my characters. Beyond that, I'm just grateful for it.

Now I feel and I say all the time that vanity is, like, long gone. I'm really free of worrying about what I look like, because it's out of my shaky hands. I don't control it. So why would I waste one second of my life worrying about it?

Michael J. Fox Quotes