Part of us believes the new car is better because it lasts longer. But, in fact, that's the worst thing about the new car. It will stay around to disappoint you, whereas a trip to Europe is over. It evaporates. It has the good sense to go away, and you are left with nothing but a wonderful memory.

Psychologists call this habituation, economists call it declining marginal utility, and the rest of us call it marriage.

The mistakes we make when we try to imagine our personal futures are also lawful, regular, and systematic. They, too, have a pattern that tells us about the powers and limits of foresight in much the same way that optical illusions tell us about the powers and limits of eyesight.

When we have an experience -- hearing a particular sonata, making love with a particular person, watching the sun set from a particular window of a particular room -- on successive occasions, we quickly begin to adapt to it, and the experience yields less pleasure each time. Psychologists call this habituation, economists call it declining marginal utility, and the rest of us call it marriage

Alas, we think of ourselves as unique entities-minds unlike any others-and thus we often reject the lessons that the emotional experience of others has to teach us.

What’s so curious about human beings is that we can look deeply into the future, foresee disaster, and still do nothing in the present to stop it. The majority of people on this planet, they’re overwhelmed with concerns about their immediate well being.