某天，有一堂课讲的是通货膨胀对国家财富的缩水效应。 他在教室里四处走动，边走边问：“是什么引起了通货膨胀？”

One day, in a class about inflation's corrosive effect on national wealth, he went around the room asking, "What causes inflation?"

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而科学家说什么，意思就是什么（ 说一是一， 说二是二）。换句话说，他讲的是真理，可以用公式表明如下：1+1=2。

A scientist says what he means , that is to say , the truth , which may be formularized as 1+1=2.

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What Siegel emphasized--the book is really about this-- he talks about what is the expected return of stocks and what is the expected return of bonds and so on.

西格尔强调的是。。。这书真正讲的是-,他讨论了什么是股票预期投资收益,以及什么是预期投资债券等等内容。

耶鲁公开课 - 金融市场课程节选