When you make reference to another literary work, do you need to get permission, pay a fee, or give credit for the work?
I am working on a character that uses lines from movies or novels as a snappy come back to situations or adversaries. I'm not talking long passages cut and pasted, but something no longer than a line or two. Example: Bad guy has our hero dead to rights and says goodbye to our fair sword-wielding knight. He replies "I'll be back" in his worst German accent.
Thank you in advance for any help you could give me. No point in fleshing out this guy if I can't use him.