📜 原文 Original Text
「学然后知不足，教然后知困。知不足，然后能自反也；知困，然后能自强也。故曰：教学相长也。」 ——《礼记·学记》
— Book of Rites, Record of Learning
📖 释义 Annotation
「教学相长」出自《礼记·学记》，是儒家教育思想的重要命题。学习了才知道自己的不足，教导了才知道自己的困惑——知道不足就能反省，知道困惑就能自强。所以教与学是互相促进的。老师在教学生的过程中，自己也在不断深化理解。这不是单向的知识传递，而是双向的成长过程。
'Teaching and learning promote each other' from the Book of Rites. Learning reveals one's deficiencies; teaching reveals one's difficulties. Knowing deficiencies leads to self-reflection; knowing difficulties leads to self-improvement. Teaching and learning are mutually reinforcing — the teacher deepens understanding through teaching.
💡 当代启示 Modern Application
最好的学习方式是教别人。「教学相长」提醒我们：当你把一个知识讲给别人听时，你自己的理解也会更深。分享知识不是损失，而是投资。
The best way to learn is to teach others. 'Teaching and learning promote each other' reminds us: when you explain something to others, your own understanding deepens. Sharing knowledge is not a loss but an investment.