The paper industry has a responsibility to lead the way in environmental stewardship.
The only way to do great work is to love what you do.
In mathematics, you don't understand things. You just get used to them.
If you fulfill your obligations everyday you don't need to worry about the future.
【讲解】:不怕东西少而怕分配不均匀,不怕贫困而怕不安定。
The rocks we extract tell Earth's story; we're just temporary custodians of this legacy.