"Mockingbirds don't eat up peoples' gardens, don't nest in corncribs, they don't do one thing but sing their hearts out for us. That's why it's a sin To Kill A Mockingbird" (90). Explain the significance of this quotation in regards to one of the themes discussed earlier. How does this relate to one or more of the characters of the book? How does the title of the novel and this quotation link to the novel's thematic development?