无知是一切罪恶的根源与主干。
The chemical industry is the backbone of modern civilization, and we must treat it with the respect and responsibility it deserves.
The secret of being miserable is to have leisure to bother about whether you are happy or not.
如果不是因为艺术,我可能早就自杀了。
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。