So much of literary sci-fi is about creating worlds that are rich and detailed and make sense at a social level. We'll create a world for people and then later present a narrative in the world.

I believe 3D is inevitable because it's about aligning our entertainment systems to our sensory system. We all have two eyes; we all see the world in 3D. And it's natural for us to want our entertainment in 3D as well. It's just getting the technology - it's really more the business model than the technology piece. We've solved the technology.

Building upon the world we created with 'Avatar' has been a rare and incredibly rewarding experience. 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.

The snake kills by squeezing very slowly. This is how the civilized world slowly, slowly pushed into the forest and takes away the world that used to be.

The Bush Administration's failure to be consistently involved in helping Israel achieve peace with the Palestinians has been both wrong for our friendship with Israel, as well as badly damaging to our standing in the Arab world.

In America, there is a failure to appreciate Europe's leading role in the world.

If you're looking for the safe choice, you shouldn't be supporting a black guy named Barack Obama to be the next leader of the free world.

We need to keep making our streets safer and our criminal justice system fairer - our homeland more secure, our world more peaceful and sustainable for the next generation.

This is the moment when we must come together to save this planet. Let us resolve that we will not leave our children a world where the oceans rise and famine spreads and terrible storms devastate our lands.

Look at the world. There is no pure competitor to the United States of America.

Wouldn't it be great if we could look forward to a whole world in which no child will be left behind?

There's not going to be a World War III, because there is no one to have World War III with.

90 percent of my time is spent on 10 percent of the world.

The men who learn endurance, are they who call the whole world, brother.

This is a world of action, and not for mopping and drowning in.

No one is useless in this world who lightens the burden of it to anyone else.