追求幸福与追求快乐不同；幸福是灵魂的一种状态，而非身体的感受。

Happiness is not a matter of intensity but of balance, order, rhythm and harmony.

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。

"The best leaders are those who can listen as well as they can speak."

把一个简单的想法认真对待。