幸福的家庭都相似，而不幸福的家庭各又各的不幸。

All happy families resemble one another, each unhappy family is unhappy in its own way.

youdao

幸福的人在各种情形下，更能体会到欢乐幸福；而不幸福的人，更容易注意哀伤和困难。

Happy individuals are more aware of the joy and happiness available in any situation, while unhappy people register more sorrow and difficulty.

youdao

除去例外情况，最不幸福的国家也是最穷的，而最幸福的国家则最富。

With exceptions, the least happy nations are the poorest, and the most happy nations are the richest.

youdao

And I mentioned three reasons, Why we need it as an independent field as opposed to just being " "well,let's do some studies on happiness,on relationships" ? as it is always being done?

我提到了三个原因，为何我们把它作为独立的研究，而不简单地,“研究一下幸福和爱情“,不像一贯人们所做的那样？

哈佛公开课 - 幸福课课程节选