事情在完成之前总是看起来不可能。

A fool always finds a greater fool to admire him.

The challenge of creating efficient and selective catalysts keeps me motivated every day.

一个个都说∶我是向上效法了尧.舜.夏禹.商汤.周文王.周武王的大道。”但所说的话却是互相攻击的,所行的事是截然相反的。