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

Our goal is long-term growth in revenue and absolute profit - so we invest aggressively in future innovation while tightly managing our short-term costs.

Most of us carry at least one device, all the time, every day. In fact many of us would feel naked without our smartphone. It's hardly surprising mobile search queries - and mobile commerce - are growing dramatically across the world.

As a precaution, we’re making machines extremely heavy with very tiny legs.

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.

If your business is static, you're likely to have issues.

If you can run the company a bit more collaboratively, you get a better result, because you have more bandwidth and checking and balancing going on.