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

The wild places are where we began. When they end, so do we.

Without wilderness, the world's a cage.

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

Polite conservationists leave no mark save the scars upon the Earth that could have been prevented had they stood their ground.

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

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.