游览过五岳之后，其他的山就没什么可看的了；而游览过黄山之后，连五岳也没什么可看的了

We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.

模糊集的概念提供了一种自然的方式来处理那些不精确性源于缺乏明确定义的类别成员标准的问题。

We feel free when we escape – even if it be but from the frying pan to the fire.

As Will Rogers would have said, "There is no such thing as a free variable."

一个好的战略不仅仅是敦促我们朝着目标或愿景前进。一个好的战略诚实地承认所面临的挑战，并提供克服这些挑战的方法。

The night is a liar, but the dawn tells the truth.