What is the difference between a Turing machine and the modern computer? It's the same as that between Hillary's ascent of Everest and the establishment of a Hilton hotel on its peak.

风险管理不是关于避免风险，而是关于理解和管理风险。

The world is a great play, and we are the actors.

数学证明的优雅在于它的简洁和清晰。