资本资产定价模型是一个简单而强大的工具，用于理解风险与回报之间的关系。

Freedom was a thing that shifted as you looked at it, the way a forest is dense with trees up close but from outside, from the empty meadow, you see its true limits. Being free had nothing to do with chains or how wide your cage was.

人最珍贵的是生命，生命最珍贵的是道。