He who can bear with your ignorance has found a true friend.
能够容忍你无知的人，可称之为真正的朋友。
He who knows only his own side of the case knows little of that.
The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
The sea is history.
造纸行业的创新不仅关乎技术，更关乎重新思考我们与自然资源的关系。