I believe that the average guy in the street will give up a great deal, if he really understands the cost of not giving it up. In fact, we may find that, while we're drastically cutting our energy consumption, we're actually raising our standard of living.

Have fun saving the world, or you are just going to depress yourself.

Overpopulation is perhaps the biggest problem facing us, and immigration is part of that problem. It has to be addressed.

The goal now is a socialist, redistributionist society, which is nature's proper steward and society's only hope.

I'm always impressed with what young people can do before older people tell them it's impossible

I sort of kept my hand in writing and went to work for the Sierra Club in '52, walked the plank there in '69, founded Friends of the Earth and the League of Conservation Voters after that.

The risk presented by these lethal wastes is like no other risk, and we should not be expected to accept it or to project it into the future in order for manufacturers and utilities to make a dollar killing now.