Since the author wrote the story and is in charge of things going in that particular book, it has a full knowledge of all characters, rather than just one character.
Answer:
“The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it …
“There is no exercise better for the heart than reaching down and lifting people up.” – John Holmes.
“You have not lived today until you have done something for someone who can never repay you.” – John Bunyan.
“A kind gesture can reach a wound that only compassion can heal.” – Steve Maraboli.
Explanation:
Depend on who you're trying to persuade. Depending on the subject, the audience may be different, so the need for persuasion may have a different appeal. If it's a tragic novel, it may call for emotional and ethical persuasion. In a murder mystery, for example, it may call for logical and rational persuasion. In a fiction novel, it may call for facts and evidence, especially if evidence is needed to be cited. And most often times, persuasion includes interests and opinions, so don't worry about that one.
You shouldn't be asking people to doing this for you. You should asking them for help.