The best mathematics is simple, but not too simple.
最好的数学是简单的，但又不至于过于简单。
每首诗都是一首情诗，即使它是关于失去的。
In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.
The old believe everything; the middle-aged suspect everything; the young know everything.
Intelligence is what you use when you don't know what to do.
The steel industry must adapt to the needs of the future.
You can't have the good without the bad. So I just take the bad with the good and move on.