Complex sentence: Works of literature are pieces of "imaginative literature" which gain artistic merit from their coherence and complexity, contrasted from scientific and other papers by their use of connotative language and imaginative content; studies of literature must be literary and systematic, treating literature as literature.
Split into simpler sentences: Works of literature are pieces of "imaginative literature" which gain artistic merit from their coherence and complexity, contrasted from scientific and other papers by their use of connotative language and imaginative content. Studies of literature must be literary and systematic, treating literature as literature.