出自《抱朴子·博喻》。登高的人，要警惕的是爬高了会摔下来，渡深水的人，往往是因为船太重才出了祸。要适可而止，不要过于贪婪。

If you want to fly, you have to give up the things that weigh you down.

Freedom is a condition of mind,and the best way to secure it is to breed it.

"A good book is a friend that never lets you down."

God's great power is in the gentle breeze,not in the storm.

We are all waiting for something to save us from ourselves.