The idea of this work developed out of an interest for both Plotinus and contemporary semiotics. My research led me to the observation that the manner in which Plotinus conceives the intelligible forms displays significant similarities with certain aspects of contemporary semiotics. However, nobody, as far as I know, describes the ancient philosopher as a possible precursor of such contemporary theories. Nevertheless, I believe that Plotinus deserves such a position, and the work that follows is intended to substantiate that claim.