Stan: It wouldn’t hurt if you filled me in a little bit every once in awhile. Did you ever think of that?
Harry Caul: It has nothing to do with me! And even less to do with you!
Stan: It’s curiosity! Did you ever hear of that? It’s just goddamn human nature!
Harry Caul: Listen, if there’s one sure fire rule that I have learned in this business is I don’t know anything about human nature. I don’t know anything about curiosity. That’s not part of what I do.