君子的学问，关键在于自身。外界的毁誉荣辱，不仅不会动摇其心志，反而会成为磨砺自己的机会。
Rudeness is the weak man's imitation of strength.
The worse a situation becomes, the less it takes to turn it around, the bigger the upside.
When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.