It was truly an astonishing grassroots explosion, ... The objective was to get a nationwide demonstration of concern for the environment so large that it would shake the political establishment out of its lethargy.

The most important environmental issue is one that is rarely mentioned, and that is the lack of a conservation ethic in our culture.

The fate of the living planet is the most important issue facing mankind.

I think the internal combustion engine will disappear from the streets of our cities in the next thirty years because transportation will be mass transportation, or probably electrical power.

In the state of Wisconsin it's mandated that teachers in the social sciences and hard sciences have to start giving environmental education by the first grade, through high school

All nations are degrading and consuming their environment to a point beyond capacity. In the past 15 years in the U.S. we have added 1300 cities with populations over 100,000. When the environment is forced to file Chapter 11, the ecology collapses. Nations recover from war but not from a failed eco-system. The status of our environment is more threatening than all wars. It is forever.

We're going to have to do a whole lot more, and give nature at least a chance to repair some of the damage we've done.