Google actually relies on our users to help with our marketing. We have a very high percentage of our users who often tell others about our search engine.

Some say Google is God. Others say Google is Satan. But if they think Google is too powerful, remember that with search engines unlike other companies, all it takes is a single click to go to another search engine.

In the future, search engines should be as useful as HAL in the movie 2001: A Space Odyssey-but hopefully they won't kill people.

My vision when we started Google 15 years ago was that eventually you wouldn't have to have a search query at all. You'd just have information come to you as you needed it. And Google Glass is now, 15 years later, sort of the first form factor that I think can deliver that vision.

If what we are doing is not seen by some people as science fiction, it's probably not transformative enough

If you had all the world's information directly attached to your brain, or an artificial brain that was smarter than your brain, you'd be better off.

Currently we don't have plans on conquering the world.