Education is an admirable thing. But it is well to remember from time to time that nothing that is worth knowing can be taught.

从生活中学习，从书籍中学习，从他人中学习。

每个圣人都有过去，每个罪人都有未来。

吹吧!风啊!吹破你的脸颊，猛烈地吹吧！

质量管理的问题不是人们不知道它。问题是他们认为自己知道。