记忆是个狡猾的东西；它既可以是安慰，也可以是诅咒。

"The truth is rarely pure and never simple."

In the chemical industry, safety isn't a department - it's a culture.

Every lump of coal we mine keeps the lights on in someone's home.

最好的投资不是技术，而是能让技术发挥作用的人。

Believe in yourself and all that you are.

A good novel tells us the truth about its protagonist; but a bad novel tells us the truth about its author.

我们教授一门学科不是为了培养关于该学科的小型活图书馆，而是让学生自己学会数学思考。