We flee from affliction the way an animal flees from death. There's a sense in which it's perfectly natural that our response to difficulty in life is aversive. We're only going to be able to live well with the difficulties of life if we face up to them, because they're difficult.

The brain can be thought of as a blank slate, yet it comes with certain built-in constraints and proclivities. Every culture recognizes the octave, because it's grounded in physics, a simple 2:1 frequency ratio. Every culture also uses the perfect fifth, 3:2. And every culture divides the octave into a discrete set of steps for their scale, usually between five and eight.

I don't really like the term entrepreneur because I think to some it implies that you start businesses for the sake of starting businesses. My view is this. If there's something you want to see in the world that doesn't exist, go build that thing. If that means you have to build a company? so be it.

The end of an X-Prize is the beginning of a new market, or a new market opportunity. We are nothing more than a distinct channel to that market.

Stock prices suffer a one-two punch. Rising raw material prices tends to compress margins or earnings, and rising interest rates tend to compress p/e ratios, as earnings yield must compete with interest rates.