短期来看，市场是投票机，但长期来看，市场是称重机。
In the short run, the market is a voting machine but in the long run, it is a weighing machine.
I don’t think you can compare eras in tennis. Every era has its great players.
In mathematics, the journey from question to answer is often more enlightening than the answer itself.
函数的概念在数学中是基础的，而λ演算提供了一种形式化这一概念的方法。
