You have teenagers thinking they're going to make millions as NBA stars when that's not realistic for even 1 percent of them. Becoming a scientist or engineer is.

The city needs a car like a fish needs a bicycle.

Clearly, there are many places where diesel is king or gas-turbine is king, or IC engines will win, but there are many places in the world where, as we've seen, they just won't do the job. The modern version of the Stirling engine has some very, very attractive characteristics, and we're trying to optimize it for some of those applications.

My biggest worry is I'm running out of time and energy. Thirty years ago I thought 10 years was a really long time.

More than ever, the world needs good engineers. However, the pool of talent is shrinking not growing.

I don't want to think about how many people have thought or still think that I'm crazy.

If history is any indication, all truths will eventually turn out to be false.