The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.
一个好的数学问题的定义是它产生的数学，而不是问题本身。
"我不是一个词，我是一种语言。"
You have to fight through some bad days to earn the best days of your life.
The only person you should try to be better than is the person you were yesterday.
每个人都幻想将来会更好，而不是更糟。
写作是一种希望的行为。