What is nonmeasurable and nonpredictable will remain nonmeasurable and nonpredictable ... no matter how much hate mail I get.

Never think that lack of variability is stability. Don't confuse lack of volatility with stability, ever.

Also, it's good to have more than one profession, in case your own profession goes out of style. A Wall Street trader who's also a belly dancer will do a lot better than a trader who winds up driving a taxi.

Please, don’t drive a school bus blindfolded.

In science you need to understand the world; in business you need others to misunderstand it.

It's not a good idea to take a forecast from someone wearing a tie. If possible, tease people who take themselves and their knowledge too seriously.

We tend to use knowledge as therapy.