“Doctors generally consider smallpox to be the worst human disease. It is thought to have killed more people than any other infectious pathogen, including the Black Death of the Middle Ages. Epidemi...”

“we could eradicate smallpox from nature, but we could not uproot the virus from the human heart”

“Redwood time moves at a more stately pace than human time. To us, when we look at a redwood tree, it seems to be motionless and still, and yet redwoods are constantly in motion, moving upward into ...”

“We're creating these massive urban areas in the Third World. It's like you take the entire population of California and put it in one city. Then you remove basic sanitation and medical services, an...”

“Experiments suggest that if one particle of Ebola enters a person's bloodstream, it can cause a fatal infection. This may explain why many of the medical workers who came down with Ebola couldn't r...”

“If a vaccine works, then the vaccinators might conceivably set up what's known as ring vaccinations around Ebola hot spots. In this technique, medical workers simply vaccinate everybody in a ring, ...”

“In biology, nothing is clear, everything is too complicated, everything is a mess, and just when you think you understand something, you peel off a layer and find deeper complications beneath. Natu...”

“Nature is an expert in cost-benefit analysis,' she says. 'Although she does her accounting a little differently. As for debts, she always collects in the long run...”

“This night is going well."Hello there."I speak too soon.Dunstan enters, his two cronies behind him. Everyone standing around goes quiet. I flinch, but not for me; he's gazing at Ivy like a lion at ...”

“The race is now on between the technoscientific and scientific forces that are destroying the living environment and those that can be harnessed to save it. . . . If the race is won, humanity can e...”

“None can reply - all seems eternal now. The wilderness has a mysterious tongue, which teaches awful doubt.”

“When Mother Nature speaks, even the Gods hold silence.”

“Today I want to belong. I want to feel safe and at home. I want to be aware of what it is like simply to be, without defenses or desires. I will appreciate the flow of life for what it is-my own tr...”

“Nature reflects the moods of the wizard.”

“My calling ties me to no office, makes me no man's slave, compels me to no action which my soul condemns. It sets me free from town life, which I loathe; and allows me to breathe clean air, to exer...”