If you forgo your plan, you also have to forgo fear.

We know where you are. We know where you've been. We can more or less know what you're thinking about.

Brands are the solution, not the problem. Brands are how you sort out the cesspool. ... Brand affinity is clearly hard wired. It is so fundamental to human existence that it's not going away. It must have a genetic component.

It's a mistake to predict the size of markets that are so new. This model has shown no signs of slowing down. So we are going to get as much of it as we possibly can, and when we get close to that we'll figure out other problems.

At Google, operations are not just an afterthought: they are critical to the company's success, and we want to have just as much effort and creativity in this domain as in new product development.

People are good at intuition, living our lives. What are computers good at? Memory.

The best thing that would happen is for Facebook to open up its data. Failing that, there are other ways to get that information.