...when you collaborate with someone else on something creative, you get to places that you would never get to on your own. The way an idea builds as it careens back and forth between good writers is so unpredictable. Sometimes it depends on people misunderstanding each other, and that's why I don't think there's any such thing as a mistake in the creative process. You never know where it might lead.
John CleeseIf you are leaping a ravine, the moment of takeoff is a bad time to be considering alternative strategies.
John CleeseEverything in comedy's got to be exactly right, which is why making a comedic film is kind of a difficult process, because, for most of the two years of shooting it and editing it and reshooting and all of that, it's not quite right. And it's only when you just at the end, you put the final polish on it, it becomes really funny again.
John Cleese