I constantly see people rise in life who are not the smartest, sometimes not even the most diligent, but they are learning machines. They go to bed every night a little wiser than they were when they got up and boy does that help, particularly when you have a long run ahead of you.

你的工作是无穷无尽的，但你的时间是有限的。你无法限制你的工作，所以你必须限制自己的时间。时间是你唯一可以管理的东西。