The goal of cryptography is to make it so that the cost of breaking the system exceeds the value of the information protected.

There is no bad whiskey. There are only some whiskeys that aren't as good as others.

群星不会因为像萤火虫而怯於出现。

问题陈述得好，问题就解决了一半。

我们不是从祖先那里继承了土地；我们是从子孙那里借来的。

小于给定数的素数个数是该数的一个函数。