别费劲去怼旧事物了。建立新事物吧。
Don‘t bother fighting the old； just build the new.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
You know, in the Middle Ages, in England, when you met a very poor person, that person would be described as an "unfortunate" -- literally, somebody who had not been blessed by fortune, an unfortunate.
勇气是生命为给予平静所要求的代价。
我从不放弃。我从不屈服。
人们并不总是在我身边，但音乐一直都在。
The only person who cannot be helped is that person who blames others.