To master a new technology, you have to play with it.

The multiplication force of technology on cognitive differences is massive.

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.

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.

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.

I have always believed that technology should do the hard work - discovery, organization, communication - so users can do what makes them happiest: living and loving, not messing with annoying computers! That means making our products work together seamlessly.

For me, privacy and security are really important. We think about it in terms of both: You can't have privacy without security.

You need to invent things and you need to get them to people. You need to commercialize those inventions. Obviously, the best way we've come up with doing that is through companies.

Especially in technology, we need revolutionary change, not incremental change.

You may think using Google's great, but I still think it's terrible.

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

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.

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

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

I do think there is an important artistic component in what we do. As a technology company I've tried to really stress that.

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

I have over 2 million followers now on Google Plus.

I would love for my phone to scream if I am about to miss an important thing in my life and never bother me if I'm doing something very important and the information coming in is less important than what I'm doing.

We don't expect Google as a first party service to provide all the answers. Part of the reason a platform is successful is because there are very very important things from other companies and other developers on top of the platform.

There are different usage patterns - I never do email during the day. I don't multitask well at all. I don't know how to be in a meeting and participate and be on email at the same time. I do see some people do it more effectively. I've never quite figured that out.

We have seen a lot of interest from Chinese developers on Google Play because the extent to which Android is used. If we can figure out a model by which we can serve those users, it would be a privilege to do so. So I don't think of China as a black hole.

It's a world of multiple screens, smart displays, with tons of low-cost computing, with big sensors built into devices. At Google, we ask how to bring together something seamless and beautiful and intuitive across all these screens.

The impact of giving someone a connected smartphone is no different from giving them a real computer. I look at how my kids learn and how different it is from how I learned because the impact of these things is just so huge. Sometimes I think we don't fully internalize what it is to get the power of knowledge in everyone's hand.

For me, it matters that we drive technology as an equalizing force, as an enabler for everyone around the world. Which is why I do want Google to see, push, and invest more in making sure computing is more accessible, connectivity is more accessible.