The art of doing mathematics consists in finding that special case which contains all the germs of generality.

"Every story has a beginning, a middle, and an end, but not necessarily in that order."

"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors."

即使在抽象中，数学也具有深远的现实应用。

当你失败时，你会学到东西。当你成功时，你会学到更多。

如果你不能安全地开采它，你根本不应该开采它。