I try to measure the amount of truth in a work rather than just looking at the generic distinction between comedy and drama.

A friend of mine is trying to do a documentary where he brings Jewish and Arab comedians to occupied territories in Israel. He wants to do shows as a way of finding some comedic common denominator. When he proposed the idea to one of the officials at the Jenin refuge camp, the guy just stared at him and said, "This is not a joke to us. We don't think that laughing is the answer."

With both Caddyshack and Vacation, it's not like the subjects were serious enough that they engaged my interest for another round. I love the characters, and the actors were great, but I didn't see the need to make another Vacation movie.

Find the most talented person in the room and if it's not you, go stand next to him. Hang out with him. try to be helpful.

As an actor, you're completely at the mercy of other people. You basically go begging for the opportunity to work. As a writer, at least nobody can tell me what to do. I can write what I want. I might not sell it, but at least I'm in control.

The comic edge of Ghostbusters will always be the same. It's still treating the supernatural with a totally mundane sensibility. In the world of ghostbusting, there are certain givens. You're always going to have some new invented technology, some pseudo-science that sounds right because we drop enough familiar terms from physics and engineering, and pseudo-methodology, something that people will think they may have read something about before.

Stand-up is every man for himself; you learn from hanging out at these clubs and watching other guys, and then trying not to be like them.