What we are finding out now is that there are not only limits to growth but also to technology and that we cannot allow technology to go on without public consent.

We may learn anew what compassion and beauty are, and pause to listen to the Earth's music.

All I know about thermal pollution is that if we continue our present rate of growth in electrical energy consumption it will simply take, by the year 2000, all our freshwater streams to cool the generators and reactors.

Childbearing should be a punishable crime against society, unless the parents hold a government license. All potential parents should be required to use contraceptive chemicals, the government issuing antidotes to citizens chosen for childbearing.

When people say, 'You're not being realistic,' they're just trying to tag some thoughts that they can't otherwise handle.

We still need conservationists who will attempt the impossible, achieving it because they aren't aware how impossible it is.

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