In Germany, you would be hanged if you cracked a joke about Hitler and you would be killed by the state if you were insane in a project of euthanasia.

[Internet] is amazing as much as human beings can be amazing, and it's debased and depraved and vile as human beings can be.

Your film is like your children. You might want a child with certain qualities, but you are never going to get the exact specification right. The film has a privilege to live its own life and develop its own character. To suppress this is dangerous. It is an approach that works the other way too: sometimes the footage has amazing qualities that you did not expect.

You are in a place that has not been seen for tens of thousands of years, because it was so sealed off. There is such silence that when you hold your breath you can hear your own heartbeat. Everything is so fresh that you have the sensation that the painters have merely retreated deeper into the dark and that they are looking at you.

Very often, footage that you have shot develops its own dynamic, it's own life, that is totally unexpected, and moves away from you're original intentions. And you have to acknowledge, yes, there is a child growing and developing and moving in a direction that isn't expected-accept it as it is and let it develop its own life.

Money doesn't make films. You just do it and take the initiative.

You have to realize that, about 20,000 years ago, there was a cataclysmic event when an entire rock face collapsed and sealed off the cave. It's a completely preserved time capsule. You've got tracks of cave bears that look like they were left yesterday, and you've got the footprint of a boy who was probably eight years old next to the footprint of a wolf.