The main thing is to keep the main thing the main thing.
最重要的是保持最重要的事情最重要。
Behind every technological breakthrough is the accumulation of countless failures.
一本书是一面镜子；如果一只猴子往里看，不会有哲学家往外看。
Only the dead have seen the end of war
"You can't change the past, but you can change the meaning of the past."