Everybody needs to understand that policies are going to change to make it unprofitable if you wreck the planet, those companies that continue exploring and developing fossil fuel resources for which there is no safe use are going to pay a very heavy cost for that.

All of the incessant debate about development assistance, and whether the rich are doing enough to help the poor, actually concerns less than 1% of rich world income. The effort required of the rich is indeed so slight that to do less is to announce brazenly to a large part of the world: 'You count for nothing.' We should not be surprised, then, if in later years the rich reap the whirlwind of that heartless response.

I believe myself that there's a great deal more interest and engagement among Americans than our politicians recognize.

White House and State Department foreign-policy experts are overwhelmingly directed towards military and diplomatic issues, not development issues.

My concern is not that there are too many sweatshops, but that there are too few.

Soil mapping is one of the pillars to the challenge of sustainable development

It's not an accident that the U.S. ranks lowest of all major donor countries in the world - that is the share of our income that goes to development aid. Americans will ask whether, because were so generous privately, that makes up the difference. But it doesn't. We still rank far below other countries.