The capital asset pricing model was not intended to be a positive theory of what investors actually do, but rather a normative theory of what rational investors should do.
资本资产定价模型并非旨在描述投资者实际行为的实证理论，而是关于理性投资者应如何行事的规范理论。
Human freedom is bounded by its choices.
研究实验室的座右铭：我们今天所从事的工作，其他人会首先想到明天。