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

It's actually good business for them to be part of conservation; it's not just philanthropy.

I was thinking of expanding the business.

There is a sense that business is a zero-sum game, that if companies are making a lot of money, it must be coming out of someone else's pocket.

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.

Most artists are making more money on tours than from CDs. That's why ticket prices and the cost of business went up. ... We don't voluntarily go out and write bigger checks.