被世人称为不道德的书，其实是揭示了世界自身的羞耻。

Courage isn't the absence of fear, but the will to keep going.

Never underestimate the power of a team that shares a common vision for progress.

限制性信念是大脑的监狱，而学习是打开监狱的钥匙。

"The only thing necessary for the triumph of evil is for good men to do nothing."

In theory, there is no difference between theory and practice. But, in practice, there is.