Fair Use

In determining whether the use made of a work in any particular case is a fair use, the factors to be considered shall include the:

Purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
Nature of the copyrighted work;
Amount and substantiality of the portion used in relation to the copyrighted work as a whole; and the
Effect of the use upon the potential market for or value of the copyrighted work.