It's got a very simple theory of the nature of wellbeing.

它有一个关于幸福本质的很简单的理论。

耶鲁公开课 - 死亡课程节选

Different theories of well-being might answer that in different ways.

不同的幸福理论对此有不同的答案。

耶鲁公开课 - 死亡课程节选

And if we had more time we could spell out rival theories of well-being, which could be interestingly distinguished one from another in terms of how they answer the question, ?" "What's missing from the experience machine?"

如果我们有更多的时间,我们可以谈谈幸福的各种理论，有意思的是，它们各不相同,他们对这个问题的答案不同，即“体验机器里缺少了什么“

耶鲁公开课 - 死亡课程节选

Now, in thinking about these points, ... in effect I'm suggesting that the value of your life-- so ,we previously were talking about different theories of well-being ? and what makes for the best kind of life.

考虑这些观点的时候，实际上我建议你的生命价值-,我们之前谈到了,幸福的各种理论,即最美好的生活是怎样的。

耶鲁公开课 - 死亡课程节选