Robots are important also. If I don my pure-scientist hat, I would say just send robots; I'll stay down here and get the data. But nobody's ever given a parade for a robot. Nobody's ever named a high school after a robot. So when I don my public-educator hat, I have to recognize the elements of exploration that excite people. It's not only the discoveries and the beautiful photos that come down from the heavens; it's the vicarious participation in discovery itself.

Doing what has never been done before is intellectually seductive, whether or not we deem it practical.

There's no denying the public's appetite for cosmic discovery.

Only when creative people take ownership of cosmic discovery will society accept science as the cultural activity that it is.

As religion is now practiced and science is now practiced, there is no intersection between the two. That is for certain. And it's not for want of trying. Over the centuries, many people - theologians as well scientists - have tried to explore points of intersection. And anytime anyone has declared that harmony has risen up, it is the consequence of religion acquiescing to scientific discovery. In every single case.

The very nature of science is discoveries, and the best of those discoveries are the ones you don't expect.