Henry Kissinger? Delmore Schwartz? Sigmund Freud? Virginia McManus? Mark Harris? Buck Henry? Joseph Heller? Anonymous? Dear Quote Investigator: A family of sayings with a humorous edge was popular in the 1960s and 1970s. Here were two versions: 1) Even a paranoid can have enemies. 2) Just because you’re paranoid doesn’t mean they aren’t after you. …