If anything, I've found nonfiction a little easier. You don't have to make anything up. Of course, that's the inherent difficulty as well: when you hit an information black hole, you don't get to make it up. That hasn't come up too often with this project though. I'm lucky to have tons of primary source material , reams of letters and diaries and memoirs.

I haven't written anything yet that makes me think, This is it! and I don't imagine I ever will. I don't know how it is with you, but when I finish something, even when I'm pleased with the results, it never quite matches the shimmering vision that was out ahead of me as I wrote.

Practicality continues to be a challenge for me - it's at odds with being an artist. I actually had a career on stage in New York - not a brilliant career or I'd still be doing it - but I got enough work to keep my agent and my union health insurance.

If you had told me twenty years ago that I would write a novel set in Russia, much less two, I simply wouldn't have believed you. I had no familiarity with Russia or its history, but part of what drives me as a reader, and more and more as a writer, is curiosity, the desire to explore unfamiliar terrain and inhabit alternate lives.

Once I had started, I discovered the secret pleasure of writing a novel. It's such an immersive, deep commitment. With short stories, you're continually having to start again from scratch, but with a novel you only need one good idea every few years.

I think I was also afraid of the novel. I write line by line, proceeding at snail's pace, rewriting as I go and paring the excess away. This is against all the best advice for writing long form prose, and I have tried over the years to break myself of the habit, but I can't bear to leave anything ungainly on the page and half the fun for me is that tinkering. So the length of a novel was a daunting prospect.

Whatever one may say about the perils of workshops, they help writers internalize an awareness of audience.