Information from the Framingham study showed earlier that happiness can spread from person to person.

VOA: special.2009.12.22

If you want to spread happiness, "Be the change you want to see in the world." By example.

如果你想传播快乐，“成为你想在世上见到的改变“，以身作则。

哈佛公开课 - 幸福课课程节选

We want to do good in the world; we want to spread happiness.

我们想为世人造福;,想传播快乐。

哈佛公开课 - 幸福课课程节选

The study is described as the first to demonstrate the indirect spread of happiness.

VOA: special.2009.01.21

So you may want to spread happiness, through your word.

你也许想传播快乐，通过你的言话。

哈佛公开课 - 幸福课课程节选

Socially conscious hip-hop artists spread messages of peace, security,unity, forgiveness and happiness.

VOA: special.2009.11.25

I want to end this premise idea by talking a little bit about a person for whom, one of the chief purpose in life was to spread happiness-- Mahatma Gandhi. This is a story about him.

我想以介绍一位,一生致力于，传播快乐的人来结论这个前提-,圣雄甘地，这是关于他的一个故事。

哈佛公开课 - 幸福课课程节选

Sadness also spread among friends, but not as much as happiness.

VOA: special.2009.01.21