我们的正常之处，就在于自己懂得自己的不正常。

Write a program as carefully as you write a letter.

The process of grouping, of organization, is not arbitrary but follows definite laws.

You can discover what your enemy fears most by observing the means he uses to frighten you.

You have to believe in yourself when no one else does.

摆脱诱惑的唯一方法就是屈服于它。