The United States expert study has found that within a certain range, happiness increases as income increases.

美国专家研究发现，在一定范围内，随着收入的增加，幸福值也会增加。

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If you take just 5 minutes every day to write down what you are grateful for yourself, then happiness increases.

每天花5分钟，写下你对自己的感谢，幸福感就会增加。

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You see it from those with very little to those who have millions: you have to give to get and by doing that, your happiness increases.

在你看来你的给予是那样的微不足道，对于那些人而言却是帮了一个大忙：奉献了给予了才能得到，这样做了，你的幸福感才会增加。

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Researchers do not know why happiness increases as people get older.

VOA: special.2010.08.03

We heard an objection that said what they did was categorically wrong, like here at the end, categorically wrong, murder is murder, it's always wrong even if it increases the overall happiness of society, a categorical objection.

其中之一是说,他们的所作所为，是绝对错误的，正如后排这位所言，绝对错误，谋杀就是谋杀，总归是错的,即便能增加社会总幸福，属于绝对主义的反对。

耶鲁公开课 - 公正课程节选

Increases in the sense of free choice better predict increases in happiness than do increases in income, democratization, social tolerance, and lots of other stuff not on this chart.

FORBES: Happiness, Freedom, and Autonomy

That physical display of how you're feeling - for example, if you're feeling happy, the physical display of happiness on your face and, perhaps even in your gestures, increases the feeling of happiness, just as the physical display of sadness increases your feelings of sadness.

NPR: Can Botox Treat Depression Along with Wrinkles?

Together they sweep up a host of studies which suggest that marriage increases health and happiness for both sexes.

ECONOMIST: I do, I can, I will