"Words are the mirrors of our thoughts."
发明家的职责是使他的工作尽可能对公众有用和可及。
Nothing is a waste of time if you use the experience wisely.
There are no dull subjects. There are only dull writers.
自然的简单性不应以我们对简单性的概念来衡量。
The problem of quality management is not what people don't know about it. The problem is what they think they do know.