过去从未死去，它甚至没有过去。
The past is never dead. It's not even past.
Human cognition is best understood as a hierarchy of information processing levels.
I've always been a fighter. I've always had to fight for what I wanted.
政客的能力一在于能够预测明天,下周,下个月,明年能够发生什么。政客的能力二在于解释为什么预测失败了。
The circumstances of the world are continually changing, and the opinions of man change also; and as government is for the living, and not for the dead, it is the living only that has any right in it.
数学的目标不是解决问题，而是理解问题。