It's one of the great paradoxes of life that we all want to be happy, yet so few of us seem to know exactly where happiness comes from.

这是人生中一个重大的悖论：所有人都希望自己幸福，但似乎能真正知道幸福感源头的人却寥寥无几。

youdao

Happiness is something a vast majority of people are in pursuit of and it's something we all want.

快乐是绝大部分人都在追求并且被每一个人所向往的事物。

youdao

Smile with happiness in the face, it's all because of my blessing, wish you have a happy Christmas time!

笑容洋溢在幸福的脸上，这一切都因为我的祝福，愿你拥有快乐的圣诞时光！

youdao

First of all, happiness is a positive sum game-- it's not a zero sum game.

首先，快乐是正和游戏-,不是零和游戏。

哈佛公开课 - 幸福课课程节选