Most things that couples disagree upon aren't worth more than a day's combat.

Mind is a machine for jumping to conclusions

It's nonsense to say money doesn't buy happiness, but people exaggerate the extent to which more money can buy more happiness.

Many people will admit that they made a mistake [putting money in dot-coms or telecoms at their peak] But that doesn’t mean that they’ve changed their mind about anything in particular. It doesn’t mean that they are now able to avoid that mistake.

Knowing the importance of luck, you should be particularly suspicious when highly consistent patterns emerge from the comparison of successful and less successful firms. In the presence of randomness, regular patterns can only be mirages.

We are often confident even when we are wrong, and an objective observer is more likely to detect our errors than we are.

The premise of this book is that it is easier to recognize other people's mistakes than your own.