每一个数学问题都是通向更深入理解世界的窗口。
The only thing that can stop you is you.
An excellent man; he has no enemies; and none of his friends like him.
"Kindness is a language that everyone understands."
To me, fearless is not the absence of fear. It's not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.