The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.

Our ancestors worshipped the Sun, and they were not that foolish. It makes sense to revere the Sun and the stars, for we are their children.

I think if we ever reach the point where we think we thoroughly understand who we are and where we came from, we will have failed.

There is in this Universe much of what seems to be design.

I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star.

We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.

For years I've been stressing with regard to UFOs that extraordinary claims require extraordinary evidence.