I have to remind myself that some birds aren't meant to be caged. Their feathers are just too bright. And when they fly away, the part of you that knows it was a sin to lock hem up DOES rejoice. Still, the place you live in is that much more drab and empty that they're gone. I guess I just miss my friend.

【译文】 孔子说：“君子和睦相处而不同流合污，小人同流合污而不能和睦相处。”

数学不是关于数字、方程、计算或算法的：它是关于理解的。

The harder you work, the luckier you get.