Twitter can no more produce analysis than a monkey can type out a work of Shakespeare.

For those who say you're thinking too big... be smart enough not to listen. For those who say the odds are too small ... be dumb enough to give it a shot. And for those who ask, how can you do that?... look them in the eyes and say, I'll figure it out.

We know that Google Earth and Google Maps have had a tremendous impact on Google traffic, users, brand, adoption, and advertisers. We also know Google News, for example, which we don't monetize, has had a tremendous impact on searches and on query quality. We know those people search more. Because we've measured it.

Technology is always evolving, and companies.. not just search companies.. can't be afraid to take advantage of change.

The biggest mistake that I made was not anticipating the rise of the social networking phenomenon.

We run the company by questions, not by answers.

At Google, operations are not just an afterthought: they are critical to the company's success, and we want to have just as much effort and creativity in this domain as in new product development.