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.

I think it's important to take risks, to step out of your comfort zone.

可持续发展不仅仅是一个流行词，更是我们对后代的责任。

作家必须成为他们时代的见证者。

The key to successful investing is to have a disciplined mindset.

做数学就是探索一个思想的宇宙，唯一的限制是你的想象力。