Billions are wasted on ineffective philanthropy. Philanthropy is decades behind business in applying rigorous thinking to the use of money.

I teach in the medical school, the School of Public Health, the Kennedy School of Government, and the Business School. And it's the best perch... because most of my work crosses boundaries.

The essence of strategy is that you must set limits on what you're trying to accomplish.

If your goal is anything but profitability - if it's to be big, or to grow fast, or to become a technology leader - you'll hit problems.

You can't be all things to all people.

The chief strategist of an organization has to be the leader - the CEO.

A target should go with every goal. A target is the value that defines success.