Not necessarily. If you can convey the essence and key ideas of the novel accurately without quoting, that's fine. However, strategic quotations can make your critique more persuasive and detailed when appropriate.
It depends. Sometimes quoting novels can enhance your analysis and provide concrete evidence, but it's not always necessary.
Well, it can be helpful but not mandatory. Quoting novels can add credibility and support your points, but you can also summarize and explain key elements without direct quotes if you do it clearly.