I believe that traditional religious belief and scientific knowledge depict the universe in radically different ways. At the bedrock they are incompatible and mutually exclusive.

One difference between ants and humans is that while ants send their old women off to war, humans send their young men.

In some ways, I had a traditional 'old South' upbringing, meaning that I spent some time in a military school, and acquired an inoculum of the military ethic that is still with me today: honor, duty, loyalty.

I think we will make it. Because one quality people have - certainly Americans have it - is that they can adapt when they see necessity staring them in the face. What to avoid is what someone once called the definition of hell: truth realized too late.

The variety of genes on the planet in viruses exceeds, or is likely to exceed, that in all of the rest of life combined.

An Armageddon is approaching at the beginning of the third millennium. But it is not the cosmic war and fiery collapse of mankind foretold in sacred scripture. It is the wreckage of the planet by an exuberantly plentiful and ingenious humanity.

If enough species are extinguished, will the ecosystems collapse, and will the extinction of most other species follow soon afterward? The only answer anyone can give is: possibly. By the time we find out, however, it might be too late. One planet, one experiment.