Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.

我认为在数学中，也许在生活中，你必须愿意让自己有点迷失。

唯一真正重要的是你在世界上产生的影响。

解析：学习不在数量，而在精通。