The fact that someone says something doesn't mean it's true. Doesn't mean they're lying, but it doesn't mean it's true.

It means nothing to be open to a proposition we don't understand.

The open road still softly calls.

Science is a way of thinking much more than it is a body of knowledge.

Virtually every major technological advance in the history of the human species - back to the invention of stone tools and the domestication of fire - has been ethically ambiguous.

Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive is owed not just to ourselves but also to that Cosmos, ancient and vast, from which we spring.

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year by year more tempting, the siren song of unreason more sonorous and attractive.