The best CEOs I know are teachers, and at the core of what they teach is strategy.

There's a fundamental distinction between strategy and operational effectiveness.

Health care historically has been a very siloed field that's organized around medical specialties - urology, cardiac surgery, and so forth - and around the supply of these specialty services. The patient is the ping-pong ball that moves from service to service.

Apple does all of its research and development in America. It has all these brilliant people sitting in Silicon Valley. But until recently, Apple made nothing in America. Zero. And the jobs that were accessible to a good, well-trained worker that knew how to do welding or assembly, none of those jobs had stayed in America. We don't have the workforce.

Strategy is about setting yourself apart from the competition. It's not a matter of being better at what you do - it's a matter of being different at what you do.

If a strategy meets a goal: It's working. If a strategy meets a target: It's a success.

The purpose of the corporation must be redefined as creating shared value, not just profit per se. This will drive the next wave of innovation and productivity growth in the global economy.