We are star stuff which has taken its destiny into its own hands. The loom of time and space works the most astonishing transformations of matter.

The old appeals to racial, sexual and religious chauvinism to rabid nationalist fervor, are beginning not to work.

What began in deadly competition has helped us to see that global cooperation is the essential precondition for our survival. Travel is broadening. It's time to hit the road again.

Human beings have a demonstrated talent for self-deception when their emotions are stirred.

Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

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.

We are a way of the universe knowing itself.