You don't rest well as long as you're seeking vengeance. I feel sad justice wasn't done, but it's time to move on and sleep well.

There is a vast frontier that's going to take us a while to understand... it was very lunar, a very desolate place, isolated.

In writing the new films, I’ve come to realize that AVATAR’s world, story and characters have become even richer than I anticipated, and it became apparent that two films would not be enough to capture everything I wanted to put on screen.

I think people had somehow gotten the sense that we have explored everything, when that isn't the case. We so know so little about the ocean, and so much of it is being destroyed.

I was always fascinated by engineering. Maybe it was an attempt maybe to get my father's respect or interest, or maybe it was just a genetic love of technology, but I was always trying to build things.

It's important for me to have hope because that's my job as a parent, to have hope, for my kids, that we're not going to leave them in a world that's in shambles, that's a chaotic place, that's a dangerous place.

All my films are love stories.