You have to spend some energy and effort to see the beauty of math.
你必须花费一些精力和努力才能看到数学的美。
"In literature, as in love, we are astonished at what is chosen by others."
Writing is like sex. First you do it for love, then you do it for your friends, and then you do it for money.
Innovation is not just about creating something new; it's about making what exists better.