我们实现明天的唯一限制将是我们今天的怀疑。
Every man has a right to his opinion, but no man has a right to be wrong in his facts.
释义:有了过错却不知道的人是被蒙蔽,迷失了方向还不返回的人是迷惑。这是对自知之明与迷途知返重要性的阐述。