The most important thing to remember is that the composer is a senior partner. You cannot force a subject on a composer if it doesn't inspire him. He has to take the lead, you are an enabler, and you are creating the enabling conditions under which he can write great music. Your words are secondary. Many librettists in opera collaborations in the past have forgotten this, or not known it, or refuse to accept it and tried to get out in front of the creative process and it just doesn't work that way.

I had a checklist in my mind of the things that make a biography practical. Is the source material centralized? Is it easy to find? Are there new primary sources that no one has ever had access to? Are all the sources in English? If they're not, are they in a language that you speak? And I realized that not only is Armstrong the most important figure of Jazz in the 20th Century, but he's a perfect subject for a biography for all of these reasons. I had always loved his music and I had been fascinated in him as a personality. And that's really the key to writing a biography.

We are born into a vast room whose walls consist of a thousand doors of possibility. Each door is flung open to the world outside, and the room is filled with light and noise. We close some of the doors deliberately, sometimes with fear, sometimes with calm certainty. Others seem to close by themselves, some so quietly that we do not even notice.

The most important thing to remember is that the composer is a senior partner. You cannot force a subject on a composer if it doesn't inspire him. He has to take the lead, you are an enabler, and you are creating the enabling conditions under which he can write great music. Your words are secondary. Many librettists in opera collaborations in the past have forgotten this, or not known it, or refuse to accept it and tried to get out in front of the creative process and it just doesn't work that way.

It's actually now, more common to see conceptual productions of Shakespearian, which Hamlet is played as a Nazi, or a homosexual, or whatever concept is being laid over the play, then it is to see a production of Shakespeare in which there is no conceptual overlay and the play is simply being presented on its own terms.

If I ever see another Shakespeare production where somebody drives a Jeep on stage, I'm going to run screaming up the aisle. These tend to be matters of design. I mean, we're seeing a lot of - it's very common to see Shakespeare with automatic weapons, things like that. They are clichés. They're new clichés, but they are clichés. And they're provincial. It's not clever to do Henry V, and have everybody dressed in United Nations soldier's costumes anymore. I've seen that one too. That kind of thing irritates me.

This impeccably researched study of the classic black insult game may be the funniest work of serious scholarship ever published.