Our brain is mapping the world. Often that map is distorted, but it's a map with constant immediate sensory input.

Destroying rainforest for economic gain is like burning a Renaissance painting to cook a meal.

The living environment is the biosphere, the thin layer around the world of living organisms. We're part of that. Our existence is dependent on it in ways that people haven't even begun to appreciate. Our existence depends not just on its existence, but its stability and its richness.

Ants are the dominant insects of the world, and they've had a great impact on habitats almost all over the land surface of the world for more than 50-million years.

That's the way to get young people. Once they see there are wonderful things to hunt for, to rediscover a species that was thought to be extinct or is extremely rare, to be the first to see a nest, to discover a new species unsuspected close to your home - these are things, I think, with a little education and excitement and the right kind of natural history would actually start a movement that makes going back to nature a profitable adventure.

Every major religion today is a winner in the Darwinian struggle waged among cultures, and none ever flourished by tolerating its rivals.

Progress, then, is a property of the evolution of life as a whole by almost any conceivable intuitive standard.... let us not pretend to deny in our philosophy what we know in our hearts to be true.