If you're changing the world, you're working on important things. You're excited to get up in the morning.

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.

I really like using my Samsung (005930:KS) tablet. I previously used the Motorola Xoom for a while and liked that.

If we were motivated by money, we would have sold the company a long time ago and ended up on a beach.

Basically, our goal is to organize the world's information and to make it universally accessible and useful.

Many leaders of big organizations, I think, don't believe that change is possible. But if you look at history, things do change, and if your business is static, you're likely to have issues.

My grandfather was an autoworker, and I have a weapon he manufactured to protect himself from the company that he would carry to work. It's a big iron pipe with a hunk of lead on the head. I think about how far we've come as companies from those days, where workers had to protect themselves from the company.

My job as a leader is to make sure everybody in the company has great opportunities, and that they feel they're having a meaningful impact and are contributing to the good of society. As a world, we're doing a better job of that. My goal is for Google to lead, not follow that.

The ultimate search engine would basically understand everything in the world, and it would always give you the right thing. And we're a long, long ways from that.

Big companies have always needed and cooperated in areas where it made sense.

I can't really comment on rumors.

I have over 2 million followers now on Google Plus.

It's quite complicated and sounds circular, but we've worked out a way of calculate a Web site's importance.

We don't have as many managers as we should, but we would rather have too few than too many.

I like going to Burning Man, for example. An environment where people can try new things. I think as technologists we should have some safe places where we can try out new things and figure out the effect on society. What's the effect on people, without having to deploy it to the whole world.

If you say you want to automate cars and save people's lives, the skills you need for that aren't taught in any particular discipline. I know - I was interested in working on automating cars when I was a Ph.D. student in 1995.

If your access to health care involves your leaving work and driving somewhere and parking and waiting for a long time, that's not going to promote healthiness.

It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.

We're at maybe 1% of what is possible. Despite the faster change, we're still moving slow relative to the opportunities we have. I think a lot of that is because of the negativity... Every story I read is Google vs someone else. That's boring. We should be focusing on building the things that don't exist.