Now when you cut a forest, an ancient forest in particular, you are not just removing a lot of big trees and a few birds fluttering around in the canopy. You are drastically imperiling a vast array of species within a few square miles of you. The number of these species may go to tens of thousands. Many of them are still unknown to science, and science has not yet discovered the key role undoubtedly played in the maintenance of that ecosystem, as in the case of fungi, microorganisms, and many of the insects.

Yes, the natural sciences are telling us a great deal about human origins, the origins of our species the origins of our minds; we're on our way to explaining a large part of it. I'll accept an answer provided only by such means as obtaining and exploring, analyzing and arguing over the evidence - not because of a scribe's myopic view of the subject written 500 years before the birth of Christ!

Nature holds the key to our aesthetic, intellectual, cognitive and even spiritual satisfaction.

Ideas emerge when a part of the real or imagined world is studied for its own sake.

The evolutionary epic is ... the best myth we will ever have.

If everyone agreed to become vegetarian, leaving little or nothing for livestock, the present 1.4 billion hectares of arable land (3.5 billion acres) would support about 10 billion people.

I've found that good dialogue tells you not only what people are saying or how they're communicating but it tells you a great deal - by dialect and tone, content and circumstance - about the quality of the character.