You have to be willing to fail to succeed.

世界上有开朗的悲观主义者吗？我就是这样的人。

不要害怕失败；害怕不去尝试。

"The world is full of people who have never, since childhood, met an open doorway with an open heart."

唯一真正的监狱是你为自己建造的那个。