来自《耶鲁大学开放课程：金融理论 第5集 第5集》

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  eaten them.
  我就可以去买一些苹果吃
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  So when I buy a stock I'm giving up apples today.
  买股票就意味这我放弃了今天的苹果
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  I'm getting the stock which is then paying me dividends
  我到明天才得到利息
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  tomorrow, which whatever they are I'm
  我可能把股票卖掉
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  selling off, I'm getting a profit out of the
  得到了利润
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  stock tomorrow and I'm ending up with apples tomorrow.
  结果是我明天得到了苹果
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  Maybe I'm just eating the dividends straight off the tree.
  那时我才能吃到苹果
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  So when I buy a stock I'm really giving up apples today
  所以我就是为了明天吃到苹果
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  and getting apples tomorrow.
  放弃了今天的苹果
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  And no matter how I do it, whether it's through stock
  无论我是买α股票
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  alpha, or through stock beta,
  还是β股票
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  or through a nominal bond it's got to be the case that all
  再或者通过债券的方式