De Witt H. Parker, The Principles of Aesthetics
“ Here color and line, the whole picture in fact, counts for little or nothing except to stir an emotion, usually of grief or pity or love, or to preach a sermon; the unity of form and content is sacrificed, the one becoming a mere means to the other. But, as we know, it is never the purpose of art merely to stir feeling; its purpose is to objectify feeling; if the art be painting, to put feeling into color and line, and only when feeling is experienced as there is it aesthetic feeling at all. ”
