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。
剪辑的魔力在于看不见的过渡。
读报或者看电视新闻时，总是难免碰上一个又一个的为社会问题的解决提供了新的解决方案的人。
I'm a failed poet. Maybe every novelist wants to write poetry first, finds he can't, and then tries the short story, which is the most demanding form after poetry. And, failing at that, only then does he take up novel writing.