I've always been fascinated by family ancestry.

All the stories in 'The UnAmericans' required interviews, travel, hours and hours in the archives. All of that stuff is so important in the beginning, but I reach a point where I have to shuck it away.

The idea that we should write towards the unknown aspects of our experience was totally groundbreaking for me. It gave me the license I needed to try to write outside myself. This attitude has deeply informed my approach to fiction, emboldening me to write characters with voices or situations that are vastly different from my own.

Years ago I read an interview with Paula Fox in which she said that in writing, truth is just as important as story. Reading that interview was the first time I really understood that there's no point in trying to impress people with my cleverness when I can just try to write honestly about what matters most to me.

Stuart Rojstaczer writes with enormous wit, style and empathy, and The Mathematician's Shiva is a big-hearted, rollickingly funny novel that's impossible to put down. A tremendous debut.

With the Holocaust - I wonder if a lot of Jewish writers of my generation have felt this way - it feels really intimidating to approach it. I feel like so many writers who have either lived through it firsthand or were part of that generation where they were closer to the people who were in it have written so beautifully about it, so there's no lack of great books about it

So in the drafting process, whenever I would discover something about what my character wanted or didn't want, I immediately just wanted my character to admit to that so I could get to the next, more interesting level in the story.

So if there was a way that I knew something about my character's desires or the things that they were resisting because I was saving it for some grand epiphany moment for my readers, I just feel like that's when you can feel the machine at work in a story. That's when you can feel the writer pulling the strings of the puppet.

It was tricky [to write about Israelis], because everyone has an opinion about the Arab - Israeli conflict, and when I first started writing these stories, I was working for an Arab - Israeli human rights group. It was during the Second Intifada. It was this totally violent and intense time, and I think there's a part of me where I don't know how to write about that situation without getting my politics out of my messages, and that's something that was important for me not to do in this book.

The Israel stories were really hard for me to write, because I think that my book is very much about politics, but it isn't political. It really was important for me to not have a political agenda at all, because I have a hard time stomaching any political fiction that feels message-y.