Intuitive diagnosis is reliable when people have a lot of relevant feedback. But people are very often willing to make intuitive diagnoses even when they're very likely to be wrong.

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.

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

I don't try to be clever at all. The idea that I could see what no one else can is an illusion.

I have always emphasized the willingness to discard.

Most people are highly optimistic most of the time.

Groups tend to be more extreme than individuals.