I'm writing a science fiction novel and I'd like to take a quote from a TV show. Specifically the scientific method episode of Star Trek Voyager. The reason being not so much that I need the quote to help the story it's just this quote is from my favorite sequence of the entire series, and I'd like to pay homage to it in my book. The quote is "I don't think you realize that you are not in control here anymore." I have no problem asking permission, I'm just wondering if anybody could give me any idea whether I have a snowball's chance in the hell of actually obtaining it. Or, given that the quote is pretty non specific whether it would even be necessary as long as I cited my source. Also what about more iconic quotes like Star Wars' "You're all clear kid now let's blow this thing and go home." If I change the words around but keep the same meaning it would still be plagiarism correct? Thanks for your time.