The absence of evidence is not the evidence of absence.

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

People are not stupid. They believe things for reasons. The last way for skeptics to get the attention of bright, curious, intelligent people is to belittle or condescend or to show arrogance toward their beliefs.

We've begun at last to wonder about our origins, star stuff contemplating the stars, organized collections of ten billion billion billion atoms contemplating the evolution of matter, tracing that long path by which it arrived at consciousness here on the planet Earth and perhaps throughout the cosmos. Our obligation to survive and flourish is owed not just to ourselves but also to that cosmos, ancient and vast, from which we spring.

Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.

We were wanderers from the beginning.

Man is a transitional animal. He is not the climax of creation