People never cease to be particularly fascinated by “secret writing,” or secret
codes. A “code,” in the broadest sense, is any word or symbol which we agree
corresponds to an element of experience of either a physical or a conceptual
nature. Codes form the basic units of our language and of our thoughts and
dreams. Most of the codes we encounter are open, direct, and fulfill pragmatic
purposes. Some, however, we discover are hidden behind, or underneath, our
day-to-day traffic of ideas. The ones which are hidden usually reveal an
ulterior intent or purpose.