You can make a stack high enough to reach the moon and back, and only then will you have used your 100 billion hamburgers. This is terrifying news to cows.

The people talking on their cell phone and following GPS instructions to where grandma's house is saying I don't need space - excuse me, that's how you know where grandma lives, and when to make the left turn.

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

As important as the civil rights movement was, I think what will rise to the top is that we left Earth in that time.

That's the point, to get the people who wouldn't otherwise think to eavesdrop on a conversation that involves science.

The school system is constructed to praise you if you get high grades. And if you get straight A's, you're the one that everyone puts forward, and they prognosticate that the straight-A person is the one most likely to succeed, because that's the way the school system is constructed and conceived.

The solar system should be viewed as our backyard, not as some sequence of destinations that we do one at a time.