The quote of “unfinished, but complete” was first introduced to my lexicon when I was studying the drawings of Michelangelo. I read about his work, and one of the art historians of the time said his drawings were purposefully left unfinished, but there was a sense of completeness to them. That was the philosophy I used as my religion, which was to create something that appeared unfinished but had a spiritual completeness to it.

For me, especially with this last book, I had nothing else to say about these characters from this point in their lives. I felt like I’d reached the end of what they’re telling me—it wasn’t even what they’re telling the story, it’s more what versions of them I needed at that time.

I don’t think I ever really know when a project is done because I make projects that could keep going on forever. For me it’s a balancing act, feeling confident enough in the work and feeling like I’ve exhausted a sense of what else could be done with it. I usually get to a certain stage where I’m very, very tired and I’m not interested in it as much as I was. And that’s a good time to end. Sometimes it’s just about saying, “I’m tired. I’ve learned a lot. We’ve gone a long way, and now the film needs to leave me, and be in the world.”

I have to tell you that I have never let anything [long] go, ever. Not these four books. I’ve let go of lots of short stories. I haven’t become a seasoned enough short story writer to practice it. I’ve let many of those go, and almost don’t do it anymore. But in terms of longer work, for whatever reason, I’m properly calibrated to that length.