数学家的工作永无止境;总有更多的问题需要解决。
The most powerful tool of the architect is the eraser.
Writing is the only thing that, when I do it, I don't feel I should be doing something else.
渔业中最宝贵的资源不是鱼,而是负责任捕捞的智慧。
写作是让看不见的东西变得可见的一种方式。