Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.

At the end of the day it's not about what you have or even what you've accomplished... it's about who you've lifted up, who you've made better. It's about what you've given back.

阅读的行为和写作的行为一样具有创造性。

在商业中，如果你不前进，你就在落后。