Don't get seduced by your own stuff. Don't get high on your own supply. The hardest thing as a filmmaker is when you're watching a film that you've worked on for several years. You know every frame so intimately that holding lots of the objectivity of a new viewer who has just seen it for the first time is the hardest thing. Every aesthetic decision you make - and you make thousands of them every day, have to - in theory, must be done from you being a blank slate. You almost have to run a program, like a mind wipe, every time you watch the movie.

It’s not a requirement to eat animals, we just choose to do it, so it becomes a moral choice and one that is having a huge impact on the planet, using up resources and destroying the biosphere.

I'm a curious guy. I can't turn away from an investigative story, when it comes to the forensic analysis. I've done 33 dives, to the titanic wreck site. I've spent over 50 hours piloting robotic vehicles at that wreck trying to piece together what happened during the disaster. How the ship broke up, comparing the historical record with the forensic record. Documentaries are kind of my new life. I love documentary filmmaking.

There are many talented people who haven't fulfilled their dreams because they over thought it, or they were too cautious, and were unwilling to make the leap of faith.

The literature now is so opaque to the average person that you couldn't take a science-fiction short story that's published now and turn it into a movie. There'd be way too much ground work you'd have to lay. It's OK to have detail and density, but if you rely on being a lifelong science-fiction fan to understand what the story is about, then it's not going to translate to a broader audience.

I've sworn off agnosticism, which I now call cowardly atheism. I've come to the position that in the complete absence of any supporting data whatsover for the persistence of the individual in some spiritual form, it is necessary to operate under the provisional conclusion that there is no afterlife and then be ready to amend that if I find out otherwise.

God wears white flannels.