I tell myself I write because I want to say something true and original about the nature of evil. That is very ambitious - to say something about the human condition that hasn't been written before. Probably I will never succeed but that is what I strive to do.

I have to feel that I'm going somewhere all the time. By definition, if you have this urge to go places, then you can't be 100 percent happy where you are. It's not like I enjoy being miserable for weeks on end. But I think it's good to be miserable for about one day every third week - that's ideal for me.

All interesting heroes have an Achilles heel.

You get spoiled as a novelist because you get to be the director and the editor, and you play all the parts, but as a screenwriter, you are a bit down the ladder.

Until the Eighties, Oslo was a rather boring town, but it's changed a lot, and is now much more cosmopolitan. If I go downtown, I visit the harbour to see the tall ships and the ferries, and to admire the modern architecture such as the Opera House or the new Astrup Fearnley Museum on the water's edge.

Thanks to the success of Henning Mankell and Peter Hoeg, there wasn't the same stigma attached to writing genre thrillers in Scandinavia as there was in many other cultures. Quite the opposite, in fact.

Losing your life is not the worst thing that can happen. The worst thing is to lose your reason for living.