Teachers are the most important role models in schools, the most instructive examples, and the most vivid examples for students.

人总是比他对自己所知道的要多。他不是一劳永逸地是什么，而是一个过程。

The process of solving a mathematical problem is often more important than the solution itself.

对任何农场来说，最好的肥料就是农民的足迹。