When a coincidence seems amazing, that's because the human mind isn’t wired to naturally comprehend probability & statistics.

How much would you pay...for the Universe?

These are two different exercises. One of them is, "You don't know and I know, so just shut up and listen," and the other one is, you're curious and you're learning, and I have a way where you can learn this so you'll know it as well. And when you know it, and know why you know it, then you don't have to reference me ever again because you take ownership of the knowledge, and you can then share it with someone else.

I can tell you that in my modern life I enjoy language. I enjoy words, their meaning, what they sound like to the ear, what they sound like to the listener. I strive to write the perfect sentence in all that I do, and when I write [the] perfect sentence I know it. If I had a second life I'd be a librettist for Broadway musicals.

Private enterprise can never lead a space frontier. It's not possible because a space frontier is expensive, it has unknown risks and it has unquantified risks.

Curiosity is a self-driven motivation to explore and to learn. Learning is like... you know, you have to take your medicine. And that is what it has become. And that's unfortunate.

Many people feel small because they're small and the universe is big, but I feel big.