Leave a gate behind you the way you first found it.
孔子说:“经常学习,不也喜悦吗?远方来了朋友,不也快乐吗?得不到理解而不怨恨,不也是君子吗?”
"Life itself is the most wonderful fairy tale."
我相信爱的力量。
The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.