And he struggled with depression. Cobain became dependent on the powerful drug heroin.

VOA: special.2009.11.06

The reason why we need positive psychology is to shift the pendulum from the 21:1 ratio that we have today: for every one study on depression or anxiety, we have 21 studies on-- sorry, for one study on happiness or wellbeing, we have 21 studies on depression and anxiety.

我们需要积极心理学是为了改变,现在的21比1这个比率：,每有一项关于抑郁或焦虑的研究，就有21项，对不起，应该是每有一项关于快乐或幸福的研究，就有21项关于抑郁或焦虑的研究。

哈佛公开课 - 幸福课课程节选

We don't have data on individual city basis but it really looks like the housing collapse price collapse--that we're going through now is on a magnitude not paralleled since The Great Depression of the 1930s.

我们没有每一个城市的数据,但是看起来似乎房价真的崩塌了,价格崩塌-现在我们正经历着,自从三十年代大萧条以来,史无前例的衰退。

耶鲁公开课 - 金融市场课程节选

"So today,my administration is proposing a sweeping overhaul of the financial regulatory system, a transformation on a scale not seen since the reforms that followed the Great Depression."

VOA: special.2009.06.19

This, to great extent, explains why so many people today 45% experience depression the 45% figure, nationwide on college campuses.

这很好地解释了，为什么今天有那么多人,感到抑郁，达到，全国大学校园都如此。

哈佛公开课 - 幸福课课程节选

He is an expert on the causes of the Great Depression.

VOA: special.2009.08.28

There's much more research, much more advice on how to get rid of depression and how do I pursue my strength.

而且有更多的研究是关于，如何摆脱抑郁,如何发展自己的优点。

哈佛公开课 - 幸福课课程节选

Doctors have been sharply divided on how to treat patients with less serious symptoms of depression.

VOA: standard.2010.01.08

Because as we'll talk about next time, rates of depression are on the rise, rates of anxiety are on the rise, not just in this country, globally.

因为就像我们下次课会说到的那样，抑郁率呈上升趋势，焦虑率呈上升趋势，不只是在这个国家，是全球化的现象。

哈佛公开课 - 幸福课课程节选

And I mentioned three reason why we want to shift this pendulum despite the fact that there are rising levels of depression around the world, on college campuses in United States,China,Australia,UK.

我提过三个原因,关于为什么要改变这个比率,尽管世界上越来越多人抑郁，遍布美国，中国，澳大利亚，英国所有大学。

哈佛公开课 - 幸福课课程节选