“When the form is more important than the content, when it exists to convince or dazzle or decorate or distract, then the form is not rising out of the needs of the content but is being used rhetorically; that is, to convince for its own sake. The eventual effect will be to frustrate us, because we are looking, ultimately, to be moved out of ourselves, to be able for a second to step away and see ourselves in relation to the world.”