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。

人生如梦，不必过于执着。

Stories are the way we make sense of our lives.

Architecture must resist the tyranny of fashion.

The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.

我们没有什么可失去的，这是一种非常自由的感觉。