"Writing is the art of listening to the whispers of the world."
证明的严谨性将数学与所有其他科学区分开来。
Beauty in things exists in the mind which contemplates them.
Don't just fight in the North or the South. Always imagine every battle in your mind, where everyone is both your enemy and your friend, and all possible events happen simultaneously. That way, nothing will take you by surprise, and everything that happens will be something you've already imagined.