Being your own person and standing for what you believe is a critical aspect of a good professional life.

With scale, there always becomes this tension of, how do you keep the start-up philosophy?

Everybody knows: people, operations, and the HR component of Google is one critical strategic asset that we have.

People see the speed; people see the innovation, the relentless innovation, and that's what Google is about.

We live in a digital world where all is available at the touch of a screen. Money has been simplified, changed subtly over time from tangible bills to numbers in cyberspace. Cash is no longer in a cloth bag; it's numbers on a screen. Numbers that can be manipulated and modified. If you run out of numbers, you can just buy some more, right?

Improving the Internet is just one means, albeit an important one, by which to improve the human condition. It must be done with an appreciation for the civil and human rights that deserve protection - without pretending that access itself is such a right.

Advertising has always been the 'head boy' of the communications industry, but not anymore. Now the rest - creative, digital, and media - is just as important.

Bitcoin is great as a form of digital money, but its scripting language is too weak for any kind of serious advanced applications to be built on top.