1. Getting the reader to relate to your views somehow
2. Diminishing the opposing view's points and making it clear that your point is even more valid.
3. Lastly, getting the reader on your side.
The hardest goal to achieve is #2 because depending on whether or not the opposing view is directly targeting you it can be hard to try to avoid their evidence if you can't even think of evidence that would help defend your views.
Macbeth is both excited and fearful after hearing the witches predictions about his future because the witches told Macbeth that he would be king, and he is worried about his role in making the prediction come true.
Sentence structure. an epilogue is a part of a book publishing company has nearly nothing to do with style research methods have nothing to do with style