Is Attribution Needed When Using Public Domain Materials?

Dear Rich: I have just finished writing a fantasy novel. I have used public domain quotes within the novel (from Aristotle, Lincoln, etc.), but because the world of the novel is not Earth, I claim the quotes are from some nonexistent book that fits in the novel's world. Is this hinky?

Your suggested use is not hinky. According to the Supreme Court, there is no legal requirement to provide attribution when public domain works are copied and placed into new works.