In all civilizations we've studied, all cultures that we know of across the Earth and across time have invested some kind of attempt to understanding where they come from, and where they are going.

Half of my library are old books because I like seeing how people thought about their world at their time. So that I don't get bigheaded about something we just discovered and I can be humble about where we might go next. Because you can see who got stuff right and most of the people who got stuff wrong.

You've never seen me debate anybody. On anything. Ever. My investment of time, as an educator, in my judgment, is best served teaching people how to think about the world around them. Teach them how to pose a question. How to judge whether one thing is true versus another. What the laws of physics say. I have a personal philosophy in life: If somebody else can do something that I'm doing, they should do it. And what I want to do is find things that would represent a unique contribution to the world - the contribution that only I, and my portfolio of talents, can make happen. Those are my priorities in life.

When you innovate, you create new industries that then boost your economy. And when you create new industries and that becomes part of your culture, your jobs can't go overseas because no one else has figured out how to do it yet.

Not enough books focus on how a culture responds to radically new ideas or discovery. Especially in the biography genre, they tend to focus on all the sordid details in the life of the person who made the discovery. I find this path to be voyeuristic but not enlightening.

No astrophysicist would deny the possibility of life. I think we're not creative enough to imagine what life would be like on another planet. Show me a dead alien. Better yet, show me a live one!

Humans aren't as good as we should be in our capacity to empathize with feelings and thoughts of others, be they humans or other animals on Earth. So maybe part of our formal education should be training in empathy. Imagine how different the world would be if, in fact, that were 'reading, writing, arithmetic, empathy.'

I was transformed by picking up a pair of binoculars and looking up, and that's hard to do for a city kid because when you look up you just see buildings - and really, your first thought is to look in people's windows. So to look out of the space - out of living space - and look up to the sky, binoculars go far, literally and figuratively.