没有一个明智的飞行员会忘记使用他的清单，无论他的才能和经验有多么出色。
The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.
大部分的人宁可否认事实，也不愿面对真相。
Mathematics is the key to understanding the universe.
It's not the customer's job to know what they want.