We are prone to overestimate how much we understand about the world and to underestimate the role of chance in events.

The most effortful forms of slow thinking are those that require you to think fast.

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.

People should be conscious of the large contribution made by anything that gets people together easily in the reduction of loneliness and emotional well-being.

Mind is a machine for jumping to conclusions

To better avoid errors, you should talk to people who disagree with you and you should talk to people who are not in the same emotional situation you are.

When action is needed, optimism, even of the mildly delusional variety, may be a good thing.