你知道，有些鸟是注定不会关在牢笼里的，它的每一片羽毛都闪耀着自由的光辉。
You know some birds are not meant to be caged,their feather are just too bright.
The revolution is not an apple that falls when it is ripe. You have to make it fall.
数学是为数学家而写的。