Laziness is built deep into our nature.

We are very influenced by completely automatic things that we have no control over, and we don't know we're doing it.

Negotiations over a shrinking pie are especially difficult because they require an allocation of losses. People tend to be much more easygoing when they bargain over an expanding pie.

To know whether you can trust a particular intuitive judgment, there are two questions you should ask: Is the environment in which the judgment is made sufficiently regular to enable predictions from the available evidence? The answer is yes for diagnosticians, no for stock pickers. Do the professionals have an adequate opportunity to learn the cues and the regularities? The answer here depends on the professionals' experience and on the quality and speed with which they discover their mistakes.

You're surprised by something, but you don't really know what surprised you; you recognize someone, but you don't really know what cues cause you to recognize that person.

When you look at the books about well-being, you see one word - it's happiness. People do not distinguish.

In a rising market, enough of your bad ideas will pay off so that you'll never learn that you should have fewer ideas.