There is something called Fair Use, in which you can make copies in small numbers if you need them for a project or something. For instance, if you're doing a school report, you can include some photos or quotes from books, if you credit the source. You cannot, however, mass-produce a copyrighted work in such quantities that you would be essentially giving it away to the entire public for free. There is such a thing as abuse even of freedoms. Otherwise, no one could sell anything.