I strongly believe that missionaries make better products. They care more. For a missionary, it's not just about the business. There has to be a business, and the business has to make sense, but that's not why you do it. You do it because you have something meaningful that motivates you.

I'm not saying that advertising is going away. But the balance is shifting. If today the successful recipe is to put 70 percent of your energy into shouting about your service and 30 percent into making it great, over the next 20 years I think that's going to invert.

There's so much stuff that has yet to be invented. There's so much new that's going to happen. People don't have any idea yet how impactful the internet is going to be and that this is still Day 1 in such a big way.

Work hard, have fun and make history.

If you decide that you're going to do only the things you know are going to work, you're going to leave a lot of opportunity on the table.

The world is littered with corpses that predicted technology in a particular arena was done. If there's another gigantic step change out there, we don't yet know what it is.

I think one of the things people don't understand is we can build more shareholder value by lowering product prices than we can by trying to raise margins. It's a more patient approach, but we think it leads to a stronger, healthier company. It also serves customers much, much better.