生活是世界上最罕见的事情。大多数人只是存在，仅此而已。

Security is not an add-on feature but the foundation.

战斗越艰难，胜利就越甜蜜。

In the realm of psychology, the line between normal and abnormal is often blurred and subjective.

The intersection of cryptography and complexity theory is where some of the most fascinating problems in computer science reside.