When we explore the cosmos, we come to believe and prove that we can solve problems that have never been solved. It brings out the best in us. Space exploration imbues everyone with an optimistic view of the future.

When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It's like time travel problems in science fiction. When is now; when was then?

Winter lingered so long in the lap of Spring that it occasioned a great deal of talk.

If you meet somebody who says he or she has never dreamed of flying, I don't believe you. I mean, they're lying.

The thing about a theory in science is it allows you make predictions. Evolutionary theory allows us to predict what apples will taste good next harvest.

No matter what you may believe spiritually or otherwise, the Earth is clearly not 6,000 or 10,000 years old.

But investment in space stimulates society, it stimulates it economically, it stimulates it intellectually, and it gives us all passion.