That's what this whole theory is about, how to get a lot of expected return without getting a lot of risk.

整个金融理论的中心,就是如何获得高收益,同时降低风险

耶鲁公开课 - 金融市场课程节选

It would be anywhere from here to here, depending on how much you're afraid of risk and how much you want expected return.

可以选择从这里到这里的任意一点，取决于你对风险的承受能力,和你的期望回报。

耶鲁公开课 - 金融市场课程节选

For any given level of return, you can reduce the risk; for any given level of risk, you can increase the return; sounds pretty good.

给定回报率,可以降低风险,给定风险水平,可以提高回报率,听上去不错

耶鲁公开课 - 金融市场课程节选