Rules are made in public places to restrict people's behavior. And so is in the library. Then how shall we obey the rules of the library?

Firstly, we should keep in mind that the library is a place for reading, studying and the exchange of knowledge. So we are not supposed to talk loudly or eat things in the library.

Secondly, we should just borrow the books that we need. Some people like to borrow a lot of books that they don't even have enough time to finish them all in time. However, once you have taken those books away, the people who really need them may have to wait. It is surely a kind of waste.

At last, we should keep the books the way they are as much as we can because they are common properties. If we draw lines or circles on the books, it will make it harder for the next reader to read the book.

Every library may have its own specific rules which, no matter what they may be, we have to obey because it is the basic principle for being a person.