In the military we also learn principles of war which also work in a corporate setting: How do you concentrate as much of your force as possible on a critical point and take a risk elsewhere? In business that translates into focusing your investment on marketing, sales, or R&D, whichever will give you the greatest return.

That's why the army sends all its future generals to what we call "charm school." As soon as you are a general, people think that you know everything. You think yourself that you have become omniscient and omnipotent. Be careful, because people want to do everything they can to please the general, and you need to guard against this.

Some people naturally have a sense of empathy and an understanding of how to bring their followers to do things. They become great politicians.

The information that the intelligence people used was a combination of satellite information, signals intelligence, and human intelligence. We are not sure to what extent Saddam [Hussein] was trying to convey an incorrect picture to us.

My own experience is use the tools that are out there. Use the digital world. But never lose sight of the need to reach out and talk to other people who don't share your view. Listen to them and see if you can find a way to compromise.

I'll tell you what they're all going to face, whichever one of them becomes president on January 21st of 2009. They will face a military force - a United States military force that cannot sustain - continually sustain 140,000 people deployed in Iraq and the 20-odd or 25,000 people we have deployed in Afghanistan and our other deployments.

We have to start thinking of America as a family. We have to stop screeching screeching at each other, stop hurting each other, and instead start caring for, sacrificing for and sharing with each other ... We cannot move forward if cynics and critics swoop down and pick apart anything that goes wrong, to a point where we lose sight of what is right, decent and uniquely good about America.