Real acting is about giving people an insight into a person, letting the audience in.

The Oath' seems like the perfect project for me, coming off the back of a big-scale adventure film like 'Everest.' I want to delve into an intimate, dark and psychological world where the characters are claustrophobic.

When I write and develop things myself, I might work for a while on a script from a book, and then I go back and read the book and go back into it to see if I lost something: is there something there?

People talk about Hollywood as a myth, but in reality, when you make Icelandic movies and you want to get them distributed in the U.S., you're not really working with Hollywood. The movies I've been making, the first one I made, I made it with Working Title, but it was financed through Universal, so it became a Hollywood production.

I don't want to do films for money and go back. I want to try to at least change the world through cinema, the industry, the way cinema is conceived.

The fact is that the rich are getting richer while the poor are being left behind. Women remain under-represented in boardrooms and under-engaged in the global workforce. Environmental change is leaving the poorest countries vulnerable. Voters are becoming more and more politically polarised and partisan.

Earning money is not a sin, and the bottom line is growth.

I'm saying there's plenty of money out there for great consumer entrepreneurs with great consumer products attacking really big markets.