曾子曰:“吾日三省吾身:为人谋而不忠乎?与朋友交而不信乎?传不习乎?”
【译文】 曾子说:“我每天都要多次提醒自己:工作是否敬业?交友是否守信?知识是否用于实践?”
The best way to learn mathematics is to do mathematics.
In the end, we will remember not the words of our enemies, but the silence of our friends.