高兴，知足，爱情，兴趣和满意是积极情感中的几种他们会使我们感到快乐。

Joy, contentedness, love, interest, and satisfaction are some of the positive emotions that lead us to feel happy.

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在爱情中，如同暴饮暴食，快乐的关键在于毫厘不差的精准。

In love, as in gluttony, pleasure is a matter of the utmost precision.

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发现这些区域或能重现这些体验，并不表明它们不是真实的。同样，我们不能说爱情，快乐或沮丧的感觉不是真实的。

Discovering those areas or reproducing them, doesn't imply the experience is not real. By the same token, we wouldn't say love, happiness and depression are not real.

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The one secret of success, happiness and a perfect love life.

成功，快乐，完美爱情的唯一秘诀。

哈佛公开课 - 幸福课课程节选

Let's not just study happy relationships and good relationships.

不要只是研究快乐良好的爱情。

哈佛公开课 - 幸福课课程节选