《孔子家语·六本》
学习的人，减损自己本来就多的东西，用虚心的态度接受别人的指教，所以才能成就完满和广博啊！
夫学者损其自多，以虚受人，故能成其满博也。
The learner, who diminishes what he already has too much of, accepts the instruction of others with a humble attitude, so he can only achieve perfection and breadth!