Studies have been carried out on people who acquired sudden wealth, such as lottery winners. In most cases, after the initial joy had worn off, people were not left with a sense of lasting happiness. In fact, they tended to revert to the way they felt before they became rich. Previously contented people continue to be contented, while those who were miserable before sink back into misery.

研究表明，一夕致富的人，比如赢得彩票奖金的人，在大多数情形下，最初的欣喜逐渐消失后，人们心中并没有留下持久幸福的感觉。事实上，他们往往又回到致富前的心理状态。过去满足的人仍然很满足，而那些在过去郁郁寡欢的人则又重拾悲伤。

(短文节选,本篇始于：钱可以买到幸福吗？)