Lie Number Four: the lie of Art Dilettantism; the notion that the purpose of art is entertainment and diversion, an escape from reality. It will be demonstrated that this lie is a product of mental inferiority, and that the true purpose of art is to alter reality. Lie Number Five: the lie of the Art Pervert; the notion that art has nothing to do with moral questions. It will be demonstrated that all art deals with moral questions; since there are no other questions. Lie Number Six: the lie of Vested Interest; the notion that art excludes propaganda and has nothing to do with freedom and justice. Meeting that issue without equivocation, we assert: _All art is propaganda. It is universally and inescapably propaganda; sometimes unconsciously, but often deliberately, propaganda._ As commentary on the above, we add, that when artists or art critics make the assertion that art excludes propaganda, what they are saying is that their kind of propaganda is art, and other kinds of propaganda are not art. Orthodoxy is my doxy, and heterodoxy is the other fellow’s doxy. As further commentary we explain that the word morality is not used in its popular sense, as a set of rules forbidding you to steal your neighbor’s purse or his wife. Morality is the science of conduct; and since all life is conduct it follows that all art--whether it knows it or not--deals with the question of how to be happy, and how to unfold the possibilities of the human spirit. Some artists preach self-restraint, and some preach self-indulgence; and both are preachers. Some artists says that the purpose of art is beauty, and they produce beautiful art works to demonstrate the truth of this doctrine; when such art works are completed, they are beautiful demonstrations of the fact that the purpose of art is to embody the artist’s ideas of truth and desirable behavior. What is art? We shall give a definition, and take the rest of the book to prove it. We hope to prove it both psychologically, by watching the art process at work, and historically, by analyzing the art works of the ages. We assert: _Art is a representation of life, modified by the personality of the artist, for the purpose of modifying other personalities, inciting them to changes of feeling, belief and action._ We put the further question: What is great art? We answer: _Great art is produced when propaganda of vitality and importance is put across with technical competence in terms of the art selected._