The planning fallacy is that you make a plan, which is usually a best-case scenario. Then you assume that the outcome will follow your plan, even when you should know better.

Hindsight bias makes surprises vanish.

Nothing in life is quite as important as you think it is while you're thinking about it.

One thing we have lost, that we had in the past, is a sense of progress, that things are getting better. There is a sense of volatility, but not of progress.

We are far too willing to reject the belief that much of what we see in life is random.

Although professionals are able to extract a considerable amount of wealth from amateurs, few stock pickers, if any, have the skill needed to beat the market consistently, year after year.

Economists think about what people ought to do. Psychologists watch what they actually do.