Yann Arthus-Bertrand

For nearly two years, I was flying above the planet with my camera. I knew straight away that this was something important to do, just at this moment, a portrait of the planet for the millennium year. I worked in 80 countries, fighting for money all the time.

I learned to be a hot-air balloon pilot to take tourists over the Masai Mara Reserve in order to earn some money and finance the work I was doing with my wife, Anne. We were studying the life of a family of lions for more than two years. Taking pictures was a way to capture information we could not put in words.

Writing novels is largely about endurance and patience. I take a lot of breaks, hit walls, and go do something else while I think things through. But I do it every day, and I try to treat it as a job, something that is not dictated by whimsy or muses.

I'm sure back in the Greek days or the Roman Empire days, when guys fought in arenas and were fighting lions, people were talking smack. Every era in history has someone talking smack. No way you can have talent and not proclaim your victory.

Sometimes you see films, not just science fiction films, where you get the sense that if the camera were to pan just to the left or the right, all of a sudden you'd be seeing light stands and crew standing around. But with 'Blade Runner,' the beauty of it is that it felt like a real, breathing city.