To believe in a universe as young as 6 or 7,000 years old is to extinguish the light from most of the galaxy.

I'm optimistic. I see no longer people accepting fuzzy thinking in the world. The change is not that people aren't still saying under-informed things. The change is that if you're in power and you say something under-informed, there are people out there with a voice who will take you to task for having done so

UFO (Unidentified Flying Object)sightings are not higher among amateur astronomers than they are in the general public. In fact, they're lower. You say, why is that so? Well, because we know what the hell we're looking at!

If you want a nation to have space exploration ambitions, you've got to send humans.

You ask people, do you pray to [a person or] God. If you say yes to that, you're religious by, presumably, anybody's standards of your conduct. And it's the yes to that question that applies to 40% of scientists. So, there're plenty of atheists who are scientists or not scientists. There maybe a conflict but many people in this country coexist in both worlds.

George Bush, within a week of this [the 9/11 attacks], in a speech, attempting to distinguish US from the Muslim fundamentalists, said Our God is the God who named the stars. The problem is: two-thirds of all stars that have names, have Arabic names. I don't think he knew this. That would confound the point that he was making.

Curiosity is unknown. All adults were once kids and once curious, but as adults you don't remember that and you see curiosity when it's expressed in children as a pathway to household disaster. They're simply exploring their environment, manifesting their curiosity. So what you need to do is create an environment where curiosity is rewarded rather than punished, or thwarted.