你必须花费一些精力和努力才能看到数学的美。
You have to spend some energy and effort to see the beauty of math.
Don’t create things to make money; make money so you can create things. The reward for good work is more work.
You have to be willing to fail, to be wrong, to look foolish.
No matter what happens in life, be good to people. Being good to people is a wonderful legacy to leave behind.