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.

I believe in the rights of creatures other than man.

I don't think we have very good records about what they were thinking except, as I pointed out earlier today, that they did invent our political system.

True wilderness is where you keep it, and real wilderness experience cannot be a sedentary one; you have to seek it out not seated, but afoot.

There is no business on a dead planet

Let the mountains talk, let the river run. Once more, and forever.