Always demand a deadline. A deadline weeds out the extraneous and the ordinary. It prevents you from trying to make it perfect， so you have to make it different. Different is better.
"In the heart of every exile, there is a homeland that never leaves."
做数学就是与宇宙对话，寻找我们甚至可能还不知道如何提出的问题的答案。
The only thing that is constant is change.
The best way to find out if you can trust somebody is to trust them.