Going on Letterman is like going off the high dive. It's exhilarating, but after a while it wasn't the kind of thrill I enjoyed.

I think of images as an immune system and a transit system.

If I didn't try to eavesdrop on every bus ride I take or look for the humor when I go for a walk, I would just be depressed all the time.

People think that whatever I put into strips has happened to me in my life.

By the 6th grade I stopped doing ordinary things in front of people. It had been ordinary to sing, kids are singing all the time when they are little, but then something happens. It's not that we stop singing. I still sang. I just made sure I was alone when I did it. And I made sure I never did it accidentally. That thing we call 'bursting into song.' I believe this happens to most of us. We are still singing, but secretly and all alone.

There was a beautiful time in the beginning when I just did it and didn't analyze the consequences, but I think that time ends in everyone's work.

Always watch the hands. The hands will tell you everything you need to know.