It is not because certain things are difficult that we do not dare;it is because we do not dare that things are difficult.

Never let success get to your head, and never let failure get to your heart.

在奥斯维辛之后写诗是野蛮的。

We are all products of chance and necessity.

Abstraction is the key to managing complexity in software systems.

解释：狐狸疑心大，刚埋下东西，旋即又把它挖出来。