When you approach someone as a human being, truly and try to be as open as safety allows, some of the bigger reenactments with a whole army of paramilitary people participating, I couldn't say my feelings openly in front of everybody, without it being dangerous for my crew.

Direct cinema is about simulating a reality in which you're not having the overwhelming influence that you really are having.

We lie to ourselves and try to escape that bitter reality by saying that the world is divided into good guys and bad guys, and that we're the good guys. We condemn people as evil to reassure us that we're not like them. If there's to be any hope of preventing these things from happening again, we have to look at the reality. That any act of evil in our history was committed by human beings like us. That, very often, we're all implicated in it.

I'm trying to understand how do we tell lies to ourselves to justify what we've done and what are the consequences of those lies? But actually maybe I also recognize that in turning empathy into a practice for many years, by turning, by forcing myself to separate at some level the humanity of a human being from his or her actions and recognizing that sometimes, even the moral aspects of a human being can contribute to immoral behavior.

I think we need to make documentaries about fantasy and storytelling. I think I just started to scratch the surface of a method that allows us to do that. We want to be sucked into the events, suspend our disbelief and imagine that this is a fiction, but actually putting onscreen the gap between who the people are and who they want to be and therefore opening the question about why they want to be this person.

I believe every time you film anybody, you create reality with that person - whether it's fiction or nonfiction. If you acknowledge that filming is an occasion where people express things they might not otherwise express, that offers a much more insightful analysis of why documentaries - even of the fly-on-the-wall variety - are powerful. I think that our task as filmmakers is to create the most insightful reality given the most pressing questions.

I really believe that the past is beyond our grasp and what is essential about the past is something unspeakable.