All of technology, really, is about maximizing free options.

Never ask anyone for their opinion, forecast, or recommendation. Just ask them what they have—or don’t have—in their portfolio.

We should ban banks from risk-taking because society is going to pay the price.

There are systems that use failure as fuel for improvement, where the cost of failure is small.

Wittgenstein's ruler: Unless you have confidence in the ruler's reliability, if you use a ruler to measure a table you may also be using the table to measure the ruler.

Never take advice from anyone in a tie. They'll bankrupt you. Don't ask a general for advice on war, and don't ask a broker for advice on money.

Never, never, never think - that's one lesson you should have in life. Never think that lack of variability is stability.