I never thought I'd be a writer. I never thought I'd be able to read a book, let alone write one. So if books like this inspire kids to write, or even read a whole book, I think it's good.

Tommy Smothers is my longest mentor, and Dave Eggers is my youngest.

I wrote that letter, and the one to Nixon. And I wrote more letters, and I thought it might be a magazine article. At that time I sent it to Esquire and Playboy, but anyway, I kept writing, and all of sudden I had enough and thought, well maybe it is a book.

I've done it 30 years. I don't know what there is to gain by doing it 40. But I think there is something about doing it over that length of time that says something. That's seven U.S. presidents and five presidents of McDonald's.