Nobody's really getting in shape for anything. In modern society, you really don't have to be physically strong to do anything. The only reason that … - Jerry Seinfeld

We improvised virtually nothing [on Seinfeld], as a matter of fact. That's how good the actors were, that it sometimes seems like they are improvising. But we also knew each other so well that we knew exactly what sentences to put in their mouths that would seem natural.

There's something about [writing] -- whether it's a cubicle allegory, or it's a homework or schoolwork metaphor -- there's something about it that totally repels the comic mind. "I can't-- I'm not doin' that. That's work!" Which it is, but only in the beginning! Only in the first ten, fifteen minutes, right? Then, you're kind of havin' fun! You're makin' up stuff. Who cares if it works? Who cares?

Very early on in my career, I hit upon this idea of being the Heckle Therapist. So that when people would say something nasty, I would immediately become very sympathetic to them and try to help them with their problem and try to work out what was upsetting them, and try to be very understanding with their anger. It opened up this whole fun avenue for me as a comedian, and no one had ever seen that before.