【释义】:教导媳妇要在刚过门时开始,教育孩子要从婴儿时期抓起。  
In mathematics, the journey from question to answer is often more enlightening than the answer itself.
The world is changed by your example, not by your opinion.
每一个数学问题都是一个等待解决的谜题,每一个解决方案都是迈向更深入理解的一步。