On Education
温故而知新，可以为师矣。
"Reviewing the old and learning the new, one may become a teacher."
Chinese Original
温故而知新，可以为师矣。
English Rendering
Reviewing the old and learning the new, one may become a teacher.
Chinese Translation
孔子说:"温习学过的知识时，能从中获得新知识的人，就可以做老师了。"
Modern Meaning
In "温故而知新，可以为师矣," Confucius focuses on reviewing the old and learning the new, one may become a teacher. The exact principle is that learning becomes real only when repeated, corrected, and carried into conduct. The tension is not generic practice; it is the specific problem that knowledge stays shallow when it is consumed once and never reviewed, practiced, or taught, which still appears in after finishing one lesson, book chapter, work memo, or conversation.
How to Apply Today
Use this teaching today in after finishing one lesson, book chapter, work memo, or conversation. Because this line says "Reviewing the old and learning the new, one may become a teacher," return to one useful idea and use it in a small task before the day ends, so the lesson becomes visible in one behavior.
Reflection Question
For "温故而知新，可以为师矣" (row 141, 教育篇 / On Education), Which piece of knowledge am I treating as learned even though I have not practiced it?
Action Step
Review one lesson from today and use it in one email, decision, or conversation, specifically in response to this demand: "Reviewing the old and learning the new, one may become a teacher."
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