I spend most of my time assuming the world is not ready for the technology revolution that will be happening to them soon.

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.

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

There clearly are cases where evil people exist, but you don't have to violate the privacy of every single citizen of America to find them.

It looks like the thing that separates out the capable students from the really successful ones is not so much their knowledge...but their persistence at something.

We run the company by questions, not by answers.

I've come to a view that humans will continue to do what we do well, and that computers will continue to do what they do very well, and the two will coexist, but in different spaces.