当你怀疑自己能否飞翔的那一刻，你就永远失去了飞翔的能力。

Never let failure define you. Use it as a stepping stone to something better.

取得成功的秘诀是开始。

Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow."

最伟大的发现来自于提出最简单的问题。