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.

I am somebody who creates images, with my perspectives, fascinations and my instincts as a narrator. You have to activate the audience's imagination. If you are just giving them scientific results, they would forget the film in five minutes flat.

When I say tourism is sin and traveling on foot is virtue, it's condensed into a dictum. It's much more complex than that, but let's face it, for me, my experience, the world reveals itself to those that travel on foot. You understand the world in a much deeper level. And it does good to anyone who makes film.

at the press conference for the film he impressed everyone with his complete sincerity and innocence. he said he had come to see the sea for the first time and marveled at how clean it was. someone told him that, in fact, it wasn't. 'when the world is emptied of human beings' he said, 'it will become so again

Nature is monumentally indifferent.

When the camera is looking back at our planet Earth, it's the tiniest of specks somewhere out there in the universe. So we do have a new sense of proportion. Of course the volcanoes and the magma under us just remind us of that.

This is the birth of the modern human soul. The artists are like us, not like the Neanderthals, who had no culture - and who incidentally were still roaming the landscape at the time the paintings were made. It is striking that there is a distant cultural echo that seems to reach all the way down to us, over dozens of millennia.