密码学是关于在存在对手的情况下进行通信的。
Cryptography is about communication in the presence of adversaries.
The greatest poems are those that speak to the heart.
如果你不愿意努力工作，就别指望成功。
You can’t let success get to your head and failure to your heart.
世界上充满了显而易见的事情，却没有人注意到。