Never demolish, never remove or replace, always add, transform, and reuse!
永远不要拆除，永远不要移除或替换，总是添加、改造和再利用！
The essence of a free government consists in an effectual control of rivalries.
Every problem in mathematics is an opportunity to learn something new.
The world is full of contradictions, and I try to explore them in my work.
The only thing to do with good advice is to pass it on. It is never of any use to oneself.
The problem, as I see it, is that you’ve been told to believe that what you do is of the utmost importance. But that’s all nonsense.
世界不一定要这样。事情可以不同。