程序最重要的属性是它是否实现了用户的意图。
The most important property of a program is whether it accomplishes the intention of its user.
You have to be willing to adapt, or you'll be left behind.
如果我们让过去和现在争吵，我们将失去未来。
密码学是关于在存在对手的情况下进行通信的。