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.

. We have this attitude that people become drug addicts against their will. That they couldn’t possibly want this kind of life. But maybe that’s not true. Maybe they don’t want to live like other people — it just wouldn’t suit them.

My father grew up in Brooklyn, N.Y., with my grandparents. In Norwegian my name is pronounced 'Yoo' but my father used to call me 'Joe.'

Crime fiction is a genre for writing stories about people - about conflict, about guilt, about passion, about the human condition.

Christian ethics demand that you should not take revenge. The paradox is, naturally, that Christians worship a God who is the greatest avenger of them all. Defy him and you burn in eternal hell, an act of revenge which is completely out of proportion to the crime

Revenge is the thinking man's reflex, a complex blend of action and consistency no other animal species has so far succeeded in evolving. Evolutionary speaking, the practice of taking revenge has shown itself to the so effective that only the most vengeful of us have survived.

When you're an established name, you know that a children's book will have a pretty good chance of getting picked up. Like Madonna. It's not that I had this great idea. Actually, in my case, it was a great idea.