Tax dollars intended for science education must not be used to teach creationism as any sort of real explanation of nature, because any observation or process of inference about our origin and the nature of the universe disproves creationism in every respect.

The Big Bang banged, and for some reason we’re here. And that’s astonishing. And that we can understand that, that’s the most astonishing.

If you look back on all the teachers that you liked, I am sure you will find they were very entertaining.

The US Navy has several people on every ship that can navigate by the stars. They don't fool with that.

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

There are two questions that get to us all: Are we alone in the Universe? And, where did we come from? For me, science provides a much more satisfactory way to seek answers than does any religion I've come across. With that said, the universe is mysterious and wonderful. It fills me with reverence for nature and our place among the stars; our place in space.

Climate change is happening, humans are causing it, and I think this is perhaps the most serious environmental issue facing us.