Mathematics is the poetry of logical ideas.

听着，如果你有一次机会，一个瞬间去抓住你想要的一切，你会抓住它还是让它溜走？

Don't go around saying the world owes you a living. The world owes you nothing. It was here first.

我们拥有的最伟大工具是我们心灵的力量。