VS Copyright

I am a moralistic man. Moralistic man thinks everything naturally. He obeys only the natural order. So, his behavier is simple and easy to understand. What is natural isn't an important question. It's also not important that others wouldn't agree with what I think is natural.
For a maralistic man, Law is an enemy. It's too complicated, difficult to understand and usually boring. It's like a logical puzzle.It's far from the natural order.
That's why I am not good at legal things. When reading a newspaper, there are many articles about law. For example, a new company law started in Japan from this May. It seems to affect most companies very much. But I don't know it well, because It's a tough work to read such a article to make me sleepy.

However, I am NOT JUST a moralistic man. I am a moralistic "book-sales" man. So, I can't escape from a law related to my business; the copyright law. For my business, I have to understand it to some extent. I have to check my commodities for the copyright. Can it be sold for individuals or institutions? Can I sell it to schools, companies or government? Can I import it to Japan?
Before selling, I have to make these kinds of things clear. Cpoyright is a strong right like Patent. So, I have to understand it.

A school, one of my customer, is planning to publish the questions of entrance exam on their home page. They think it's very friendly for the appliers to the school. I also think so. But, now they are facing the problem of copyright. The problem is in exams for Japanese and English. They use many paragraphs from novels, esseys, articles in a newspaper and so on.
Any schools don't need permission from the people with copyright, to use the paragraph for their tests. But, when publishing the tests, they have to require the permission. It is more difficult than we think. Who wrote this article? Where does he or she live? How can I contact them? These investigations are very hard work. Moreover, even if we can contact the people with copyright, it is not certain that they will permit us to use their publications.
That's why the school's plan is stopping now.

In Japanese bookstores, there are red books whose title is a university's name. They are very famous books among high school students. We call them AKAHON, which is a collection of previous entrance exams of the unversity. I heard that this book could be illegal because the permission of copyright is not enough. If it's true, we can't sell such a book and many students could be in panic. Unnatural.