The most important thing is that you have a North Star. You have to know where you're going.

Spend each day trying to be a little wiser than you were when you woke up.

You must not think that what is hard for you to master is humanly impossible； and if it is humanly possible， consider it to be within your reach.

如果你碰到一个混蛋，忽略他们。如果你总是到处碰到混蛋，那就得好好看看你自己了。