Living creatively is really important to maintain throughout your life. And living creatively doesn't mean only artistic creativity, although that's part of it. It means being yourself, not just complying with the wishes of other people.

I draw a weekly comic strip called Life in Hell, which is syndicated in about 250 newspapers. That's what I did before The Simpsons, and what I plan to do for the rest of my life.

Don't have a cow, man.

Everybody doesn't have to get every joke. People really appreciate not being condescended to.

I have to say that The Simpsons comes from a huge number of great writers headed by Al Jean, the show-runner, and the work that they do is really fantastic. It's a blast just to sit around with them in the writers' room and listen to all the filthy jokes that will never get on the air.

I love the idea that we put in jokes the kids don't get. And that later, when they grow up and read a few books and go to college and watch the show again, they can get it on a completely different level.

The conundrum that I face on a daily basis is that I have two sons who have grown up watching 'The Simpsons,' so they know exactly what buttons to push. They know how Bart irritates Homer, and they use these lines against me to tell me that I'm not funny anymore.