"A well-written biography is a resurrection of the past."

计算理论为理解什么可以计算、什么不能计算提供了基础。

The difference between an ordeal and an adventure is your attitude.

If you can't understand why someone is doing something, look at the consequences of their actions, whatever they might be, and then infer the motivations from their consequences.

The idea that a bell rings to signal when investors should get into or out of the market is simply not credible.