以卵投石也。尽天下之卵，其石犹是也，不可毁也
凡事要量力而行，如果用鸡蛋去碰石头，即使把世界上的鸡蛋都碰完，石头还会和原来一样，不会被损毁。
Reason obeys itself; and ignorance submits to whatever is dictated to it.
The human soul is a labyrinth, full of twists and turns, and we are all trying to find our way out.
智慧是避免做工作却能完成工作的能力。