I was always intrigued when I was growing up, and then in engineering school, with the idea of a perpetual machine. I think of the Wal-Mart culture as that.

I'm still very bullish on emerging markets. There's an emerging middle class. They're a growing group of customers. And frankly, they want Walmart. They want everyday low price. And that's why we are continuing to grow in the emerging markets around the world, too.

Wal-Mart, we've been known for many years - back to the days of when Sam Walton started the company - we've been known for basics. The basic need of families and people across America. Wal-Mart was known as the place for basics.

I think every responsible public board at every board meeting should be discussing succession. And, of course, Walmart has a very mature board: our chairman Rob Walton and other members. So succession is an ongoing. I think when I first joined the board of directors, it was discussed then. And it's discussed at every board meeting continually.