If you believe in God, that's a belief. If you are an atheist, it's a belief too, because you cannot prove that God does not exist.

I think being self-taught is the only way of really learning things, because you have to question everybody. You don't simply absorb axioms or so-called truths like they are rules. You have to test them, and you need to reflect on them, to consider the effect they create. So, you have very significant opinions about things, because they come out from your own reflections.

I love films that don't end when they end, that go on in your head a couple of days later.

There are many films I would happily spend two hours with, not so many I would spend two years with. I need to be obsessed about films, because the way I work, that means two years without sleeping at all, and losing part of your life. I need to put all of my energy and heart and soul and bones and blood and skin and muscles in the things that I do.

Once I do something, I need to be obsessed - or maybe I don't need to be obsessed, but I get obsessed because that's just the way my brain works - but I need to pay a lot of attention to detail. Because everything counts to me once I do something, even if it's a movie that nobody cares about. That's why I need to choose very well what I want to do. But in real life, when I watch TV or whatever, I guess I'm not that obsessive guy, and I'm pretty boring.

There are a couple of things that are, in the present, floating in front of my face, and once one of them gets enough energy to become a voice that I cannot not hear, then I will become a steamroller. When you've made your film, you stop hearing the voice.

Something that I wanted to do through the film is try to explore the roots of belief, because everything has to do with beliefs. When I studied the side of the rationalists and the skeptics, and the side of the believers and so-called psychics, I found out that both of them, no matter what they claim to do, behave in a very similar way. They only accepted what confirmed their previous positions, and tended to reject everything that put them at risk.