The first and fundamental principle is: you care only about the total portfolio.

第一条也是最基本的一条原则是：,你要关注的是整个投资组合。

耶鲁公开课 - 金融市场课程节选

Finally, I just want to say, next lecture is January twenty-eighth and we're going to talk about portfolio diversification, which is one very important application of the fundamental principle of risk management, as applied to securities.

最后，我想说下一讲是在1月28日,到时我们会谈谈资产组合多样化，这是风险管理基本原则中,对证券投资来说，这是非常重要的一项应用。

耶鲁公开课 - 金融市场课程节选