Google will fulfill its mission only when its search engine is AI-complete. You guys know what that means? That's artificial intelligence.

We want to build technology that everybody loves using, and that affects everyone. We want to create beautiful, intuitive services and technologies that are so incredibly useful that people use them twice a day. Like they use a toothbrush. There aren't that many things people use twice a day.

If you ask an economist what's driven economic growth, it's been major advances in things that mattered - the mechanization of farming, mass manufacturing, things like that. The problem is, our society is not organized around doing that.

Search engines didn't really understand the notion of which pages were more important. If you typed "Stanford," you got random pages that mentioned Stanford. This obviously wasn't going to work.

Sergey also came on very early, probably in late '95 or early '96, and was really interested in the data mining part. Basically, we thought, "Oh, we should be able to make a better search engine."

Stanford would be first. You can take universities and just rank them, and they come out in the order you'd expect. So we thought, "This is really interesting. This thing really works. We should use it for search." So I started building a search engine.