You have to fall before you can fly.
你必须先跌倒才能飞翔。
问题的根本原因在于,在现代世界里,愚蠢的人自以为是,而聪明的人充满怀疑。
The only limit to our realization of tomorrow will be our doubts of today.
领导力就是赋予他人力量,去实现他们认为不可能的事情。
The sky is not the limit; it is the beginning.