You're capable of such beautiful dreams and such horrible nightmares.

An organism at war with itself is doomed.

There is never only ONE of anything in nature.

One of the greatest gifts adults can give - to their offspring and to their society - is to read to children.

Human beings grew up in forests; we have a natural affinity for them. How lovely a tree is, straining toward the sky.

The hole in the ozone layer is a kind of skywriting. At first it seemed to spell out our continuing complacency before a witch's brew of deadly perils. But perhaps it really tells of a newfound talent to work together to protect the global environment.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.