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。