求知若饥,虚心若愚。
The world is a puzzle; the pieces are scattered, and no one has the picture on the box.
善不是出自内心的,不能保留;行为不能从自身辩明的,不能去做。善不是出自内心的,只能够勉强支撑一时,必然不能长久。所以也只能使伪善。