年轻人不知道什么是谨慎，因此他们尝试不可能的事情——并且一代又一代地实现了它。
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
Even the strongest man needs someone to stand by him.
The city is a collective work of art.
求学的人必须先认识仁。仁就是与万物浑然一体的境界。