一只眼睛的人可以用来看水平仪，有毒的石头可以用来治疗痈疽。

The computer is just a tool. The pencil is also a tool. It's about how you use it.

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

把一个简单的想法认真对待。

逻辑的法则就是真理的法则。

未来奖励那些坚持下去的人。我没有时间为自己感到难过。我没有时间抱怨。我要坚持下去。