I've always wanted to be involved in an exorcism movie. But I thought, "How do you make something scarier than The Exorcist?" The answer is you don't. But that doesn't mean you can't make something that is original and interesting.

Natural disasters are terrifying - that loss of control, this feeling that something is just going to randomly end your life for absolutely no reason is terrifying. But, what scares me is the human reaction to it and how people behave when the rules of civility and society are obliterated.

I always feel that there's no violence in a movie - it's not real, it's a magic trick. Nobody is really dying. In fact, the people that die in my movies have gone on to become extremely successful!

I think that horror films have a very direct relationship to the time in which they're made. The films that really strike a film with the public are very often reflecting something that everyone, consciously or unconsciously feeling - atomic age, post 9-11, post Iraq war; it's hard to predict what people are going to be afraid of.

When I was 22, I had this horrible psoriasis outbreak. It was all over my legs, I couldn't walk because my legs were cracked and bleeding. Weird things like that can happen to your body.

Twitter is wonderful. You can kill rumours instantly.

I've always been a fan of 3D, going back to movies in the '50s. I was part of the early '80s 3D craze, which was coming at you in Jaws 3D, so I've always wanted to make a 3D film.