The real struggle is not between good and evil but between pain and pleasure.

You don't have to be a mathematician to have a feel for numbers.

系统价值的证明是它的存在。

永远不要在质量上妥协。它是我们所做一切的基础。

我不喜欢被预测。

教师的任务是引导学生从已知走向未知。