Wal-Mart's size and scale is so vast they literally have the ability to change the face of the entire country. If Wal-Mart were to make a decision tomorrow to refuse to sell a single product made with partially hydrogenated oils, for example, we'd probably see rates from heart disease decline a few years later. That's how powerful Wal-Mart is.

During World War II, the pilot losses were staggering. In some bombing raids, as many as 80% of the planes that left did not return.

We can rationalize anything and easily quit on ourselves. Leadership is refusing to quit on others.

I go into every meeting, into every room and for every speech understanding the standard deviation, the Bell Curve. I know there are about 10-15 percent of people in the room, who say, "I've been trying to say this for years. Finally. I agree. Yes, yes, yes." I know there are about 15 percent of the people in the room who think I'm an idiot, who think I don't know what I'm talking about, who think I'm naive or I have oversimplified everything. The majority who are open to the ideal.

What I understand about this concept of why is that it functions exactly the same way as parenting or exercise or any of these things we claim to invest in.

What you do is proof of what you believe.

We can't all be good at everything. This is partly the logic behind having a team in the first place, so each role can be filled with the person best suited for that role and together, every job and every strength is covered.