I don't think we have enough imaginary creatures in cinema. It seems like we're stuck with zombies, vampires, and werewolves. We should have everything. We should have minotaurs. We should have elves. We should have mermen in popular culture. But instead we've stuck with vampires.

The great thing about fairy tales and myths is that they go beyond character. They're not about character. They're about more basic things. They're about basic fears or longings or desires or fantasies, and stuff like that.

For me now, it's about what you would write and what you wouldn't write, and that's how I select what I am going to do. It can be quite nice being brought a concept by a studio for me to work on.

I don't know why anybody would come to Ireland chasing a dream or even employment - that's an extraordinary thing for a place where traditionally one was unemployed. For 10 years, people were coming from all over the world looking for employment here, kind of an extraordinary phenomenon. That's stopped now.

The whole Ireland was taken over by greed and materialism. It was extraordinary. The price of every house had skyrocketed. If you were a small farmer and you had two fields outside, if you built 17 bungalows on them all, you become a millionaire, that kind of thing. It was extraordinary to see how rapidly that kind of ethic takes over a whole culture, but that's what's happened to us since the year 1998, about. It's completely extraordinary how little regard the culture had for the landscape. The country is now full of these half-built industrial parks and hotels.

I've also worked hard portraying an Ireland which is fast disappearing. Ireland was a very depressed and difficult place in the 1980s, and I've tried to include that in the script. I worked really hard to find the heart of the book.

It's hard to know whether certain characters come to life or not, they either come to have their own life or they don't. I've written many things in which the characters just remain inert.