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

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

Is the minor convenience of allowing the present generation the luxury of doubling its energy consumption every 10 years worth the major hazard of exposing the next 20,000 generations to this lethal waste?

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

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.

We are no longer inheriting the Earth from our parents, we are stealing it from our children.

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.