“I used to think the top environmental problems were biodiversity loss, ecosystem collapse, and climate change. I thought that with 30 years of good science we could address those problems. But I was wrong. The top environmental problems are selfishness, greed, and apathy … and to deal with those we need a spiritual and cultural transformation - and we scientists don’t know how to do that.”

Gus Speth, UNDP Administrator, 1993-1999