Once you go from 10 people to 100, you already don’t know who everyone is. So at that stage you might as well keep growing, to get the advantages of scale.

But the vast majority of books ever written are not accessible to anyone except the most tenacious researchers at premier academic libraries. Books written after 1923 quickly disappear into a literary black hole.

The kind of environment that we developed Google in, the reason that we were able to develop a search engine, is the web was so open. Once you get too many rules, that will stifle innovation.

When I was growing up, I always knew I'd be in the top of my class in math, and that gave me a lot of self-confidence.

People try new things all the time. By now, the people who succeed have to be very sophisticated.

Generally, health is just so heavily regulated. It's just a painful business to be in. It's just not necessarily how I want to spend my time.

As we go forward, I hope we're going to continue to use technology to make really big differences in how people live and work.