Musicians and journalists are the canaries in the coalmine, but, eventually, as computers get more and more powerful, it will kill off all middle-class professions.

Advertisers and marketers should be looking to bring new experiences to different parts of the brain. It's a more profound idea than just dropping a billboard into a video game.

An intelligent person feels guilty for downloading music without paying the musician, but they use this free-open-culture ideology to cover it.

I have been around military technology people a lot because of my role in virtual reality I've seen weapons from conception to implementation. And there is an extraordinary gadget lust that drives the military. So it's possible that war is just the ultimate expression of creativity.

I fear that we are beginning to design ourselves to suit digital models of us, and I worry about a leaching of empathy and humanity in that process.

There were studies that asked people in different cultures to draw pictures of their enemies, and the pictures all looked remarkably the same. They always had exaggerated canine teeth and a certain sort of expression. That led to speculation about whether at an earlier stage in the human experience we were hunted by some sort of carnivore.

We should talk about the ultimate cause of war. It's a question we should never stop asking, because if we do, there's a chance, however remote, that we might miss an opportunity to reduce the occurrence of war.