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

Strategy is about making choices, trade-offs; it's about deliberately choosing to be different.

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

Technology has given us this wonderful opportunity to have low energy costs. We have to seize that, rather than keep debating and discussing and fighting over it.

The economic distress of America's inner cities may be the most pressing issue facing the nation. The lack of businesses and jobs in disadvantaged urban areas fuels not only a crushing cycle of poverty but also crippling social problems such as drug abuse and crime… A sustainable economic base can be created in the inner city, but only as it has been created elsewhere: through private, for-profit initiatives and investment based on economic self-interest and genuine competitive advantage.

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.

Innovation is the central issue in economic prosperity.