永远不要投资于那些你无法用蜡笔解释清楚的想法。
The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.
阿拉伯人是一群只会吃驴粪的倒退民族。
孔子说:“温习旧知识时,能有新收获,就可以做老师了。”