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.

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.

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.

You can make money without doing evil.

When I was growing up, I always knew I'd be in the top of my class in math, and that gave me a lot of self-confidence.

But the vast majority of books ever written are not accessible to anyone except the most tenacious researchers at premier academic libraries. Books written after 1923 quickly disappear into a literary black hole.

The name was supposed to be 'Googol,' which is the mathematical term for a 1 followed by 100 zeroes. It was before the Google spellchecker existed.