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

So what is true for life itself is no less true for the universe: knowing where you came from is no less important than knowing where you are going.

I'm revealing information to people. I'm not creating it. And to the extent that people embrace it, I think they're empowered by it, because any time you have a bigger perspective today than you did yesterday, it's got to be only for the good of your mind, your body, your soul.

In America, there are people who don't read science fiction but still think about tomorrow, so it's not only the force of science-fiction that makes you a tomorrow thinker.

Before we start talking about genetic differences, you gotta come up with a system where there's equal opportunity.

This fear factor, this war driver is a very strong one and it's been with the species ever since the beginning and it motivated the Great Wall of China. War can be aggressive or defensive, right? So it motivated the Great Wall of China. Our space program was reactive to Russia.

Science is like an inoculation against charlatans who would have you believe whatever it is they tell you.