This climate surrounding me has reached Clive Oppenheimer. In practical terms he sees that I'm not interested in any sort of daredevil stunts, I'm just interested in the work. And he's convinced that I'm clinically sane.

Some of the most important caves, like Lascaux in the Dordogne region in France, have had to be closed down. There had been too many people allowed in, and they left a mold on the walls that is spreading and which can't really be stopped.

You should bear in mind that almost all my documentaries are feature films in disguise.

"Jack Reacher" was easy because the function of the villain was just to spread fear and horror.

We have to articulate ourselves. Otherwise we would be cows in the field.

The power of a volcano when it erupts is so evident, so visible, so palpable.

My non-fiction films are pretty much fiction, or at least close... It's all "movies" for me. I never have searched for a subject. They always just come along. They never come by way of decision-making. They just haunt me. I can't get rid of them. I did not invite them.