What appears good to one may appear evil to another, and vice versa.
The greatest prosperity can exist only as the result of the greatest possible productivity of the men and machines of the establishment.
译文:感叹白发,观察世间的道路。人们无不追求荣华,看重富贵而轻视贫贱。显赫的宫门,华丽的宫殿。年轻时入仕,幼年时就献上谋略。
The best mathematics is that which you do not understand at first glance.