If you replace a soldier with a machine, you take away the possibility of the soldier or the policeman to not do something the state asks of him. He may think it's unethical to do it. A machine doesn't have that critical perspective.

In Rio de Janeiro, every cop has to make a choice. He either turns dirty, keeps his mouth shut, or goes to war.

Usually I say I have no imagination.

I have to be clear with myself and very conscious of what I am trying to say. Misunderstandings will always take place; it's unavoidable.

We make violent cops, we make violent criminals, and no wonder we have shootouts in slums all of the time.

Science is based on the possibility of objectivity, on the possibility of different people checking out for themselves the observations made by others. Without that possibility, there is no empirical principle capable of deciding between different arguments and theories.

As a filmmaker, I make the films that I love, that are in my heart. That's what I care about.