The first colony on Mars is not going to be built by a private company. How are you going to make money? You're not.

Plenty of people get excited about the universe.

I like seeing how people have succeeded when others would have presumed they would have failed, and others just go along with whatever everyone else does.

It is in the best interests of civilization and our economy and our nation to understand what objective truths are as revealed by the methods and tools of science.

In the New Testament, Thomas Jefferson cut out everything that was mystical, magical, miracle - physically with scissors - and then pasted in all that remained, such as Jesus's Sermon on the Mount.

The good thing about science is that it's true whether or not you believe in it.

In science, if you don't do it, somebody else will. Whereas in art, if Beethoven didn't compose the 'Ninth Symphony,' no one else before or after is going to compose the 'Ninth Symphony' that he composed; no one else is going to paint 'Starry Night' by van Gogh.