I saw Cara Delevingne like five, six times. And I was never talking about the film [Valerian]. And then at the end, I say okay, let's do some test. She says yeah, yeah, good. So I took her in the room, and I test her for like six hours non-stop. Exercise, exercise, exercise for six hours. It was actually funny. And then I knew at the end of the six hours.

I did The Fifth Element and [Jean-Claude] Mezieres, the artist of Valerian; he was working on Fifth Element. And he's actually the one who say, why don't you do Valerian? And I said because we can't make it. And you really have to wait for Avatar and to suddenly think oh okay, maybe we can think of it. But before Avatar, just forget it.

I think it's the society that drains us out, and we are in a society where we are driven by money.

I would rather stop [making movies] too soon than too late.

I try to follow my instinct as a moviegoer and I do the thing I would love to see it at a movie. I'm like everyone, almost, I go to a movie once a week. I like every kind of film if it’s well made. I’m fine. I’m not a specialist fighting for a genre of film. You just have to follow your instinct.

Live your life, experience something, and then you're going to have a lot of things to say. But if you hang around in Hollywood, then you're going to say the same thing as everyone else - nothing.

That's the storyboard that we have in the beginning [of Valerian]. It's an easy shot. It's just a spaceship coming in. That's the first layout. On the first layout, we see the timing of the shot and the speed. It starts to get some shadows, and we see that everything is moving in the back.