来自《耶鲁大学开放课程：金融理论 第8集 第8集》

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  present value of all the expenditures,
  总支出的价值 即等式左边
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  that's the left hand side, and the present value of all
  和现在总收入的价值
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  the revenue, that's the right hand side,
  即等式右边
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  and make sure that the left hand side is smaller than the
  并且保证左边的数值在耶鲁的运行过程中
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  right hand side over the whole course of Yale's life.
  总是小于右边的数值的
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  So that simple principle has a tremendous implication which was
  让上一届耶鲁校长懊恼的是
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  overlooked, to the chagrin of the last Yale president.
  这个简单理论背后的巨大作用被忽视了
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  So as I said, the issue was in 1997,
  如我所述 1997年的问题
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  I believe, it could have been '96 something like that,
  或者大概在96年发生的吧
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  1997, Benno Schmidt, who was then the Yale
  97年 耶鲁的前校长本诺·施密特
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  president, released a white paper,
  发放了一份白皮书
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  he called it, documenting the fact that Yale
  这份白皮书里面