If there had never been the Great Migration there would never have been jazz, there would never have been Michelle Obama. A lot of amazing black people exist in this country because of the Great Migration. That's nation-building.

I think a lot about race and the burdens of representation. There's an idea that because I'm writing a book set around the time of the Great Migration, and happen to be black, I'm trying to write a definitive account of the Great Migration, the so-called "black experience." That's not what I'm doing, and it can be frustrating.

I started writing the book without realizing I was writing a book. That sounds stupid, but it's true. I'd been trying and failing to make a different manuscript work, and I thought I was just taking a break by writing some short stories. I'm not a very good short story writer - the amazing compression that is required for short stories doesn't come easily to me. But anyway, I thought I'd try to write some short stories. And a structure took shape - I stumbled upon it.

I think of my success as a kind of fluke. How else could I possibly think of it? And although it's a banal thing to say, I wrote my book because I was writing my book. At first I didn't know I was writing it, and one of the amazing things that happened as I was putting sentences down on paper is that some of the things that are most sacred and important to me rose to the surface of the prose.

The critics and the reviewers are more frightening than anything else!

One of the things that writers worry about is finding a voice. I don't think it's a thing that you find so much as it is something that comes to you, or that presents itself.

You have to find a way of shutting the future out and focusing on the writing. One of the problems I'll have with writing my second book is getting back into a situation where I think about the words on the page rather than the publishing industry, or success, or any kind of readership I may now have. I'll have to do what writers do, which is focus on the story and nothing else.