Suppose you work in a library, checking people's books as they leave, and a friend asks you to let him smuggle out a hard-to-find reference work that he wants to own. You might hesitate to agree for various reasons. You might be afraid that he'll be caught, and that both you and he will then get into trouble. You might want the book to stay in the library so that you can consult it yourself. But you may also think that what he proposes is wrong -- that he shouldn't do it and you shouldn't help him. If you think that, what does it mean, and what, if anything, makes it true?
What does it all mean? Thomas Nagel, Chapter 7
What does "if anything" mean in the context? Thanks