All the times, all the very many times, I had been forced to thwart and stifle my own nature seemed to gather together then, in that hot and dismal corridor. I heard a rushing sound in my head and felt a pressure in my breast, like floodwaters rising behind a flimsy dike. Before I knew I did it, the soup bowl was rising in my hand as if elevated by some supernatural force. Then, its yellow-gray contents were running down the nurse's pudgy face.

September 11, 2001, revealed heroism in ordinary people who might have gone through their lives never called upon to demonstrate the extent of their courage.

And so, as generally happens, those who have most give least, and those with less somehow make shrift to share.

Writing is like bricklaying; you put down one word after another. Sometimes the wall goes up straight and true and sometimes it doesn't and you have to push it down and start again, but you don't stop; it's your trade.

Write what you know. Every guide for the aspiring author advises this. Because I live in a long-settled rural place, I know certain things. I know the feel of a newborn lamb's damp, tight-curled fleece and the sharp sound a well-bucket chain makes as it scrapes on stone. But more than these material things, I know the feelings that flourish in small communities. And I know other kinds of emotional truths that I believe apply across the centuries.

I think probably the scaredest I've ever been was in Somalia. I arrived there when the episode that became known as 'Black Hawk Down' was still taking place. The Americans were still pinned down under fire. And everybody else was basically going the other way, and I was the only one putting my hand up for a flight in.

The thing that most attracts me to historical fiction is taking the factual record as far as it is known, using that as scaffolding, and then letting imagination build the structure that fills in those things we can never find out for sure.