In general, quotations are used for titles of novels. Underlining is not a common way to indicate a novel. This is a standard convention in writing and publishing.
The 'the silence novel' could be centered around a mystery that is related to silence. For example, it might be about a crime that occurred in complete silence, leaving no witnesses or audible clues. It could also be about a person who has lost their ability to speak and the journey they go through in a world that is so focused on sound and communication. The title might also imply a more psychological exploration of how silence can affect a person's mental state, such as leading to paranoia or deep self - reflection.
Writing quotations in a story involves capturing the essence of the character's speech. Make it vivid and engaging. Ensure the quotations add depth and authenticity to the narrative. Sometimes, a well-placed quotation can be a turning point or reveal hidden emotions.
Typically, novels are italicized. This is a common convention to distinguish them from regular text. Underlining is less common for novels, and quotations are more often used for shorter works like short stories or articles.
I'm not sure specifically as there could be many novels with that title. It might be about a period of great quietness, perhaps in a post - apocalyptic world where there is a lack of human activity or noise. It could also explore themes like isolation and the impact of silence on the human psyche.