如果你想快乐一生，帮助别人。

If you want happiness for a lifetime, help somebody.

youdao

对于发生在你身上的困难事情，你选择如何应对的区别可能就在于是愤怒一生还是快乐一生的区别。

How you choose to respond to the difficult things that happen to you can mean the difference between a life of anger... or joy.

youdao

那是我一生中最快乐的一段时光。

That was one of the happiest moments of my life.

《牛津词典》

And you came here-- Freshmen week, you knew it was going to last for the rest of your life.

来到这里，经过新生周，你知道快乐会持续一生。

哈佛公开课 - 幸福课课程节选

And it was going to last for the rest of your life.

这种快乐将持续一生。

哈佛公开课 - 幸福课课程节选

There you are at the pearly gates and you look back on your life and you could, in principle, add up all the pleasures, add up all the pains, subtract the pains from the pleasures and ask yourself, "How good a life did I have?

当你站在天堂门口回顾一生时,你可以，在原则上，累加所有快乐，累加所有痛苦，从快乐中减去痛苦然后问自己，“我的一生到底有多好？

耶鲁公开课 - 死亡课程节选