The concept of academic freedom means different things to different people. To some it means absence of restraint on scholarship; to others it means the right to present conflicting and unpopular points of view in the classroom. Some would place certain limitations on academic freedom; others would not. Some maintain that academic freedom is a matter that concerns only university faculties; others hold that it refers to the liberty to inquire, to discuss, and to interpret any aspect of culture at all levels of instruction. Some believe it refers solely to teacher freedom. Increasingly, it is argued that student freedom is equally involved. Krug has suggested, for example, that the definition of intellectual freedom has two parts: (a) the right to believe what one wants on any subject and to express one's beliefs orally or graphically, publicly or privately, as one deems appropriate and (b) total and complete freedom of access to all information and ideas, regardless of the medium of communication used. A statement by the American Civil Liberties Union on academic freedom reads as follows: