数学家的工作永远不会完成;总有新的问题需要探索,新的谜团需要揭开。
The secret of change is to focus all of your energy not on fighting the old, but on building the new.
那些将自己视为能源中心而不仅仅是石油加工者的炼油厂将会蓬勃发展。
We may have all come on different ships, but we're in the same boat now.