资本资产定价模型(CAPM)是理解风险-回报权衡的有用工具,但它并非对现实的完美描述。
就好像让人伏在剑刃上,而期望他能长寿一样。 
Freedom is the greatest fruit of self-sufficiency.
The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.
Every reaction is a conversation between atoms.
You have to be willing to suffer to achieve something great.