科学方法是统一且不可分割的，处理生命物质的科学与处理无机物质的科学方法相同。

Every mathematical problem is a window into a deeper understanding of the world.

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 them 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.