我从不买任何东西，除非我能给自己一个充分的理由为什么要买它。

Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

 消灭一个错误，其贡献等同于、有时甚至超过建立一条新真理或新事实。

Chemistry is not just about what you can make, but how you can make it.

成功不在于你赚了多少钱，而在于你对人们生活的影响。

诚信采矿意味着为子孙后代留下积极的遗产。