How effective is humor as a leadership tool? Being funny is one of the ultimate weapons a person can have in human society. It might even compete with being really good-looking.

If you’re efficient, you’re doing it the wrong way. The right way is the hard way. The show was successful because I micromanaged it—every word, every line, every take, every edit, every casting. That’s my way of life.

Seinfeld: It’s very important to know what you don’t like. A big part of innovation is saying, “You know what I’m really sick of?” For me, that was talk shows where music plays, somebody walks out to a desk, shakes hands with the host, and sits down.