A tiny blue dot set in a sunbeam. Here it is. That's where we live. That's home. We humans are one species and this is our world. It is our responsibility to cherish it. Of all the worlds in our solar system, the only one so far as we know, graced by life.

I find science so much more fascinating than science fiction. It also has the advantage of being true.

If the greenhouse effect is a blanket in which we wrap ourselves to keep warm, nuclear winter kicks the blanket off.

An atheist has to know a lot more than I know. An atheist is someone who knows there is no god. By some definitions atheism is very stupid.

The universe seems neither benign nor hostile, merely indifferent.

Where we have strong emotions, we're liable to fool ourselves.

The open road still softly calls, like a nearly forgotten song of childhood