Fitzcarraldo is that metonymic character that's unwilling to give up on his dreams. Meeting Walter was the point in which all of these dreams coalesced into a very real person with a very real story.

There were the classic challenges any tourist faces, like getting lost, getting sick, losing things, getting in a fight... All these things happened numerous times. The only point of the trip that was defiantly challenging was a point that's not actually in our film.

At one point, we were stuck at the border of Peru and Colombia and met this large Haitian population that was stranded there without passports and couldn't move. We had this revelation that, as tourists, we were so free to move, and here was this other population who couldn't cross borders.

I worked on Tree of Life. It was just magical. It was like a little family. A fleeting, beautiful alliance to forge something meaningful. It was amazing, like a transcendental experience to be on the set.

Fitzcarraldo is a mad dreamer. He's willing to sacrifice everything in order to make his vision of an opera house. That metaphor of pulling the boat over the mountain is so integral to anyone making any creative effort. It's that universal Sisyphean struggle.

The biggest lesson we took was when Werner [Herzog] said in a meeting with us that the mother of all challenges is to get your film seen in theater. To finally share this film has been so gratifying. The way audiences have responded, too.

It's organic. It's like a river. One stream comes in and it meets another stream and becomes the Amazon.