Everybody loves convenience, everyone wants to save time. But we had built a business called the Supercenter business that was one stop shopping that helped people save time and you had instant gratification because you could walk in the Supercenter and you could get 120,000 SKUs, and they were the best items from around the world.

You're working because you want to change the world. You want to make it better. Why isn't the company that you work for, worthy not just of your time but your money as well? I mean, but we don't have a concept of that. That's not how we think about companies, and I think it's sad, because companies are most of our effort. They're where most of people's time is, where a lot of the money is, and so I think I'd like for us to help out more than we are.

No matter what your mission is, have some notion in your head. Forget the model, whether it's government or nonprofit or profit. Ask yourself the more important question: Is my mission improving the world? Are you sure about it? Seek to disconfirm that all the time. And if you can, change your mission.

Many leaders of big organizations, I think, don't believe that change is possible. But if you look at history, things do change, and if your business is static, you're likely to have issues.

It has been an exciting time to be at Walmart. Looking back, I'm not sure I could have imagined some of the things we're doing in our business today but, at the same time, it feels like we're just getting started.

Businesses grow and they don't change enough and they decline over time. Retailers do that on a bit of a faster cycle.