You don't have to burn books to destroy a culture. Just get people to stop reading them.
你无法改变过去,但可以通过担心未来来毁掉现在。
The past is a shadow that follows you into the future.
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.