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.

Without wilderness, the world's a cage.

You don't have a conservation policy unless you have a population policy.

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

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

Perhaps most ridiculous of all is the suggestion that we 'keep' our radioactive garbage for the use of our descendants. This 'solution', I think, requires an immediate poll of the next 20,000 generations.

We cannot go on fiddling while the earth's wild places burn.