I just can't fathom tweeting, and I'd rather spend my time writing a book than a blog, but I rather grudgingly agreed to a Facebook page. I had a brief, intense romance with Facebook. It's weirdly addictive, but anything that time-sucking is a danger for a writer who writes as slowly as I do. Now I post only occasionally and nothing very confessional. I think I'm carbon dating myself as I speak.

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.

When I left the theatre and turned to writing, one of the big pulls was that, unlike the theatre, I didn't have to wait to be hired before I could do my art. That was huge. But you still have to figure out how to support your habit; it's rare and lucky when art pays the bills.

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.

That requires quite an imaginative leap because it's hard for me to imagine that my biography would be of much interest to anyone, and because I'm a fairly private person, the notion doesn't appeal to me.

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.