知识只有在它有助于人类解放时才有价值。
You know some birds are not meant to be caged,their feather are just too bright.
The role of the infinitely small in nature is infinitely large.
技术应该为农民服务，而不是反过来。
当天赋不努力时，勤奋胜过天赋。
If you borrow something， try to return it in better shape than you received it. Clean it， sharpen it， fill it up.