革命就像骑自行车,如果不前进就会倒下。
Greatness is not about being the best. It's about being better than you were before.
End of the road, time to let go
The study of mathematics is like air or gravity—it is everywhere, and you can't see it, but you know it's there.
解释:那些知识浅薄的人所争论的都是些枝微末节。