You could be a poet, an artist, a comedian - if you're in the culture of innovation then you embrace those who do and you're going to protect the science curriculum in the classroom because you understand the meaning and the value of it. And science discoveries don't scare you. You say, "Give me more science", not less. "Give me more technology", not less.

Computers have proved to be formidable chess players. In fact, they've beaten our top human chess champions.

When we try to look farther into the universe we come to what appears to be the end of space but actually it's the beginning of time.

So while you're getting ripped apart head to toe as you fall into a black hole, you will also extrude through the fabric of space and time, like toothpaste squeezed through a tube. To all the words in the English language that describe ways to die (e.g., homicide, suicide, electrocution, suffocation, starvation) we add the term spaghettification.

My popularity does not derive from me pandering to people. People came to me. I don't tell anyone to follow me on Twitter. I don't tell people to like my Facebook page. I don't tell people to fill the venue. I'm offered to people, and then people come.

If NASA were advancing a space frontier there would be challenges you've never seen before. You have to be creative and you have to patent some new idea. You get to Mars...well, how do we get the water from the soil? I gotta invent a new device that will do that. And the carbon dioxide in the atmosphere, how can we use that? Can we breathe the oxygen from the carbon dioxide?

To achieve this density of a neutron star at home, just cram a herd of 50 million elephants into the volume of a thimble.